A similar act as The Old Stinkeroo made famous in the movie Dumb and Dumber To. A Tangy Rimmer is when one swipes their own ass juice around the rim of the glass of another person, usually a friend or buddy, as a joke or for revenge.
Jerry gave Carl's beer glass a Tangy Rimmer when he was talking with the waitress. Carl later commented how much he enjoyed his beer and that he hadn't noticed the funky, ripe, earthy, leathery quality that it was leaving on his palette this time.
by Eaton Holgoode April 15, 2015