Dicksizing is so... I don't know... juvenile or something. Its lame. This is a harm reduction website that promotes the free exchange of info about drugs. So lets keep it at least somewhat civil.
I'll share my experience with the drug because it is extensive. I snorted my first line when I was 16 with a guy on my soccer team after practice. I new what to expect- I have had an abnormal facination with drugs since 15 and i finally had found a reliable source for this drug. There was a hot girl wearing tight spandex and her alright looking friend that heightened the experience. I felt more euphoria, clean euphoria, of the type one gets when he scores a goal. In highschool, over the next couple of years I got different grades, some were disappointements that numbed my teeth but didn't give me a good high. Set and setting is important with this drug.
I've seen the price in CA drop over the last 20 years. Smoke or shoot the drug and you will feel it - an explosion of euphoria that brings you to your knees. With shoot coke, I would get a rinnging in my ears and sometimes a slight numbing of the roof of the mouth.
Back to snorting. With good coke, from my perspected, insulfated, I would get a distinct pleasant taste (even though the drug is probably tasteless). Within30 sec-1 minute I start to feel like the top layer of teeth go very numb- a very pleasant sensation. I can usually tell if I did a good amount if my face goes numb. This is followed soon after with a feeling of moderate exhiliration, a noticeable increase in my pulse, and the desire to talk. One distinction compared to meth is that meth makes my skin feel different or more sensitive. There is also a subtlety, certain nuiassances that probably take some appreciation, kind of like a fine line. Usually good coke won't have a strong chemical taste, just a mild, slightly salty/bitter, almost sweet flavor. But the high comes on gradually, not all at once like crack/inject. I spoke with someone that was getting pure coke from a research lab and that one difference he noticed was a less jittery comedown (but not completely without jitters). Nevered tried mephedrone so have no basis for comparison.
Little aside about coca tea. Found the real thing. 4 tea bags makes a pleasant tasting flower/ green tea tasting concoction that barely gets you stimulated. However, 20 teabags cut open, tea removed, shoved in my gums- a hilariously amusing spectacle with backing soda added definitely got me high. The high took 5 or so minutes to kick in and did so gradually, but my face got numb, felt a suprising amount of stimulation, and my heart rate jacked up to 120 beats per minute. Makes me wonder what chewing whole leaf is like- if it is as innocous as many have said. Unfortunately consignment of whole leaves and peruvian sweatened lime never made it through customs.