For me it would probably be the time that I put some speed in the salt shaker(seemed like a good idea at the time) this one bimbo ended up getting pretty tweaked off of it and did some wierd shit in gym class. I got ratted out the next day by some sorry POS but I ended up getting out of it by saying to the principle "look at me, do you really believe that if I had some drugs I would waste it on somebody else". Kinda feel bad about it now, but still find it funny.