to watch or babysit friends while they are on some kind of substance; to make sure your friends dont get into trouble or go completely insane while theyre high.
im not gonna roll tonight, im gonna trip sit the guys.
by ribbitboing November 21, 2006
Providing a calm environment for people on various psychoactive drugs; making sure the music is right, providing interesting conversation, and generally making things go smoothly for the trippers. Also, the name of an online community that provides this service.
Tripper: "I'm home alone on drugs and don't have someone to talk to, I should go on Tripsit!"
by Teknos January 03, 2014