If you are considering doing drugs, then this is my suggestion to you: Don't. Here is a better solution to going out and scoring a 'sack', don't sleep for a few days. Now I admit you may need a few non-sleep aids to get through to this [i.e. caffeine, or whatever else might help you stay awake...which i guess are themselves drugs...so maybe my point is completely lost here], but it is way better than any drug you can buy...and the best part is this is free [monetarily speaking, you definitely pay with hours of sleepiness]. After just one entire day of not sleeping you begin to go crazy, and all of those 'crazy' ideas you had before now make so much sense.
So go ahead and give it a try, I'd like to know how it works out for you.