Top definition
Creeping up on a female in a groopey manner
Alex quit kissing on Courtney and stop grabbing her tits your totally cosbying
by 1212332 January 30, 2015
Happy St. Patties Day!
Roofieing someone by putting roofies in someone's Jell-o.
"Well, he invited me back to his place for Jell-o, and there's always room for Jell-o, but I don't remember much after that. Do you think he was cosbying me?
by KrystalKruspe July 09, 2016
Happy St. Patties Day!