I have done piles of mushrooms in the past. I don't recommend it if you're feeling at all emotionally unstable, Kie. I've seen some people go to a bad place, though I've never had a bad trip, myself.

If you do this, make sure you have the next day off and don't make any plans with anyone, since you'll be in no condition to keep them. Do them with someone you trust, so you can keep an eye on one another.

Oh, and try to write some stuff down. Reading it later will be hilarious.