The act when a man inserts his own testicles into his own anus or someone elses. The etymology being taken from the concept of tea-bagging however in this circumstance the reference to trash connotes the dirtiness of shit.

you actually use a trash bag in place of a condom, taping said bag around your throbbing manhood and waking up the next morning realizing you are both a legend and a loser at the exact same moment

A game that involves cutting a face-hole in a 55 gal trash bag and crouching down inside the bag (to look like trash) in a driveway or on a porch. The object of the game is to frighten residents, trick-or-treaters, or unsuspecting pizza delivery guys.