get a big trash can and fill it with water and then throw a big mixture of kool-aid into it then take that to his house at night and lean the shit against the door. Next morning when they wake up and open the door the kool-aid splashing into the house and stains the shit out of the carpet/anything else in its path.

GL

Or same scenario except piss/shit in the trash can and leave it to sit for like 3 weeks with a lid on it. Gaurenteed to make that house stink for atleast a year.