Drumstick Gang

Go to a fancy restaurant with 5 of your friends. Bring duct tape but hide it. Have everyone wear a handle bar moustache. Have everyone order chicken but make sure its on the bone and comes with a drumstick. When the food comes- have everyone grab a drumstick and head to the bathroom. Wait until its just the 5 of you and one random guy. When he starts to pee- attack him with your drumsticks. After you have delivered a good beating- yank his pants down and place one drumstick in his crack (but prop it so its standing straight up)- then place the other drumsticks around his head and duct tape them so they stay. Also wrap the duct tape over his eyes. Place a card on the table that says "DRUMSTICK GANG AGAINST CANCER"- That way nobody can really get that mad at you. If he runs out of the bathroom - peoples reaction would be priceless- but even if he doesnt- this will still haunt him forever.

SKI BUDDY

Go to your local ski resort- dress up a manequin in full ski gear- cover up his face with a ski mask so he looks as real as possible. But also douse his jacket in gasoline- Put skis on him and with another friend act as if you are escorting him to the chair lift-
Get in line with everyone- and turn to the people behind you and tell them how its your buddys first time skiing- and how you have a good joke planned for him.
They will most likely smile like friendly skiiers do.
When you get on the lift - wait til the chair lift is at its highest point- light the mannequin on fire and throw the mannequin off the lift. Watch it fall- Then high five your friend. Scream out bad jokes like "Was the lift too hot for ya?" or "Got a light buddy?" Turn around and give the people behind you- who are in shock- the thumbs up.