The act of cutting the zipper off of a plastic sandwich bag, squirting lubricant into it, placing the plastic bag into the microwave for 4-6 seconds, placing the bag between the cushions of a couch, and proceeding to then fuck the couch silly. Usually done by lonely virgins.
Guy 1: Dude, I lonely sandwiched like three times last night.
Guy 2: You're a sick bastard. You seriously need to get laid.
Nickname given to bales of marijuana thrown overboard or out of airplanes. Origin is reportedly from members of the US Coast Guard in the area of Southern Florida.