Pharmaceutically the most painful thing I ever snorted was actually the first time I snorted a little green klonopin. I cried and it burned like the devil was nose-f**king me with a glass shard condom on. The most painful thing I ever snorted in all realms would have to be an herbal energy pill from 7-11, I think it was called a yellowjacket because I remember there being an angry looking BumbleBee on the packet and the capsule was yellow and black with little black lines on the yellow part. That was incredibly stupid of me. Sometimes I thank goodness for the ridiculous amounts of coke, oxy, and heroin I put up my nose everyday for the past two and a half years because I use to wake up and blow out these gigantic plugs that kind of looked like roaches, I mean they were literally an inch long and a half inch wide let alone thick, but after I got clean for a few weeks they stopped coming and now my right nostril is a friggin Juggernaut of nose fun. I can snort just about anything without it clogging, burning, or running and its a whole lot better than trying to blow my nose every half hour to try and squeeze another pebble up there, and god forbid if I sneezed back then, it cost me at least 20 bucks. Geez, these oxy's really make me ramble on.