boner-cide

An adjective/noun used to describe faeces found in someone's anus that they were not aware of, usually occurs during foreplay between male/male couples.

*John retracts his finger from Joe's anus*

John: "Yeah...maybe we should do anal another time..."
Joe: "...I've gotta drop a deuce, don't I?"
John: "Mhm. Talk about boner-cide."