In my five years of using drugs, I have been ripped off many a times. Most are because I was young, dumb and vulnerable. I can't really say that I have learned my lesson now those five years after, but I am always watching for it now.
SCENARIO #1
My buddy and me were throwning down together on a quarter-ounce of yak. We had not found ourselves a reliable connect yet, and after school on Friday, we were eager to find a dealer and get our shit. We were about 16, 17 at this time. My older sister's boyfriend, who we were very friendly with, said one of his good friends from school would help us out with it. Bad thing was my older sister and her boyfriend both had to go to work, since it was around 4PM. So we waited at her boyfriend's older sister's apartment, for the guy to show up. He pulls up with a friend of his, asks us for the money, says that he has to go on such-and-such a road to go grab it. We give him the money. Fifteen minutes later, we call him, asking him how it is going. He says he is in the man's house now, that he will be back in fifteen minutes. Fifteen minutes go by, no answer. Thirty minutes go by, no answer. Hour goes by, no answer. Call him the next day, asking what the fuck happened, after threatening him with damage to property or beating his ass. He said what happened to me was my own fault for being a stupid, and he would bring out brass knuckles and box if he had too (was 3 years my age, had a weight advantage, and knew how to fight).
LOST: $240
SCENARIO #2
I was 17 years old, and new to the ecstacy pill game. An older friend of mine, hooked me up with one of his buddies, to try to score us some rolls. Well, we gave him the money (stupid) first and he drove off to go get them. He told us it would take him an hour tops, the time elapsed and he wouldn't pick up our phone calls. We decided to walk to the gas station, hoping we would spot him and he didn't fuck us over. Luckily, he pulls up. He tells us that our six pills which were originally $12 a piece, had been bumped to about $15 a piece. That wasn't a problem. They were legit MDMA illas, and we were new to it, so didn't care. My friend, the same from Scenario #1, went with me to this party, where we each took one, and sold the majority. For some reason, our sixth and final pill, was in his possession. When we went back to the place we were staying at he held on to it. I worked the next afternoon, and when I came back to pick him up, he said another friend of ours; whose house he had been at, while I was at work, had "found" the pill and taken it from him. Later, come to find out he had eaten and lied.
LOST: 1 Green Hammer, ecstacy pill
SCENARIO #3
The same friend I have been mentioning was trying to get involved in the ecstacy game alongside me, but didn't have any cash to really work with. He was my buddy, so I floated him six or so pills at a discounted price. He brought the money back a few days later, all was fine. He asked for another six pills, this time he had money for four of them. His two friends wanted to roll for the first time, at some concert coming up. That's cool by me. He wouldnt return my calls or texts, for close to a month or six weeks after that. By then thinking that it was cool, and I had forgotten his debt to me.
LOST: 2 Gold Mercedes Benz, ecstacy pills
SCENARIO #4
My ecstacy supplier was dry for the moment, so I found an older kid who graduated from my school and was friends with my circle of friends, to hook me up. I fronted him the money, and he brought back 50 pills. The people that drove him to pick up the pills, who were my age and in my circle, asked if they could get a few pills at the same price I had paid for them. I said it was no problem, and we were cool. The next night, I tried scoring 30 ecstacy pills, to which they upped the price two dollars more per pill, which was utterly ridiculous. I got them to bring it down a dollar each, and afterwards the same group asked if they could get a few pills for a dollar cheaper than what they had charged me. I told them they tried charging me an extra $60 for these pills, but since I negoatied with them I got them still $30 more expensive than the last batch. Because of this there was no way I would sell them four or five pills for a dollar cheaper than what I paid for them. They got pissed and ran off. Few hours later, they called me asking me for ten pills. I met them down the street, at a school parking lot. Two were in the car, the third walked to me, flashing the money for the pills. I poured the ten pills in his hand, and he darted off. The other two in the car pretended they didn't know what was going on. The actual guy who stole the pills eventually gave me five free pills a few months later, and a few weeks after that, gave me the rest of my money to cover what he had jacked.
LOST: 10 Green Hearts
GAINED: $50, 3 Blue Dolphins, 2 Orange Diamonds
SCENARIO #5
Well, word most have gotten out that I was an easy target, after the jacking of 10 pills, as stated in SCENARIO #4. This guy was around my age, and a friend of many of the same people I was friends with. For the last month, he had been my hookup for scoring some yak. One weekend, I asked him if he could get me a hold of a dozen or so ecstacy pills. He said he could. He told me what color/design they were to be, offered me a cheap price, let me come to his apartment (bad housing project) to wait while I gave him my money to go grab them also in the same apartments. A little bit later, his female roommate was worried all of the sudden, and urged me to go with her to look for him. We found him in the courtyard, in the middle, of the apartments. His hands were dirty, with mud rubbed on his white tee. His collar was a little stretched. He said he had been jacked. His and his roommates stories didn't mess too well, so I thought it was a set up. I covered the $40 my ex-girlfriend had given me to get her pills, but I showed the other friend of mine who fronted me most of the money the guy who had supposedly been jacked. The dude almost shit his pants. He til this day, 2.5 years later, apologizes for it every time I see him.
LOST: $40 ($120)
SCENARIO #6
It has been well over a year since I have been jacked for anything really significant (+$10), and I was feeling pretty good that that was in my younger years. A female from Chicago, had been finding me ecstacy for a good year and a half at really low prices and high quality, after the streets had been dry for nearly everyone. Her brother had also been selling me cocaine, in large amounts, for a good two months straight, before his guy had fallen off. Since I stopped messing with pills (too many piperazines!!), but needed alcohol one night I decided to call her up. She mentioned her brother wanted to buy some yak. I hooked him up with something, for a few hundred dollars. Everything straight. The next week and a half, he was trying to score some more from my guy. Anywhere from $400 to $1500 at a time, but our schedules never worked together well enough for us to meet up. The other day he asked me for around $1200 worth. I said I could give him a little less than half of that, and the rest a few hours later. He said that was fine.
I wanted to meet at his sister's apartment, since we are really tight; despite them being hardcore gang members from West Side Chicago, and me being a little white kid from the country. We met there, and her sister had already driven to stay in Chicago for the weekend. He gets in my car, and wants to handle the product, which I say not until I see money. ATTN!: all the signs were pointing to something bad was going to happen. They were backed into a parking spot, for a quick access to leave, and wanted me to let them handle the product and take it back to their car. I said "No", lets go to a house. They said they would go to the dude's friend; who wanted the shit, to his girlfriends apartment. We followed them, and ended up in some back alley at some house. My girl and me were wondering what was going on. They had taken us to one of their crack heads', they serve, house to do it there, since he was fighting with his girl. We walked in. Two older white crackheads were wandering about, at first I thought they were cops then shrugged it off. The two black guys wanted to see the product, I showed them. They asked to taste it, and I busted a half gram for them to snort and see what it was like. We negotiated prices for a second, and then things started going haywire. The brother of my close friend asked to use a lighter, to smoke a cigarette, and walked out back to the car. I was wondering why he did that since everyone inside was smoking. I follow him, since I was more familiar with him asking what was going on, by the time I get back in, the other guy had walked to the front porch to supposedly "cook up a bit in a spoon" to see what it is like. I walk out there he is gone. A whole bunch more drama. Find out the dude ran off to another house to cook it up, said it didn't cook up good enough, and didn't feel he had to pay for it. Seemed like my friend and this guy were really fighting on the phone about this shit. The crackheads made us leave their house. I said I would key the car and pop the tires of the dude who robbed me to show him whats up, my friend insisted I shouldnt. It was his cousin's car, and he was going to take it back to her (he had the keys), yet he didn't know what apartment was hers (this cousin, was dating the dude who jacked me). All in all, both of them were in on it, to jack me for my shit. I was deeply upset about it for the entire night. Thankfully, I told my dealer, and he said I shouldnt have messed with them and he will still work with me until I pay him off. Those two however, have something coming to them.

Hope there quick $200 or $300 a piece, was worth it, in the long run.
LOST: $400 of cocaine