Pee on them! Or you could shit in some brownies, and then tell them there is weed in em, fuck their mom and video tape it, put sugar water in their gas tanks. Put some plastic gloves on, get a sheet of acid wet and stick it on their necks, burn their house down, but make sure the doors and windows are all glued shut, call one of their parents house after midnight, and tell them their kid just died in a car accident. LOL.