kontkever
A bug who crawls in your butt and lives in there for several years until you get fucked in the butt and he gets hit by the foreskin. When he gets hit by the foreskin he grabs it and waits until the owner of the foreskin pulls it out. The bug is now free and can live his life in freedom.
Yo dude, yesterday I was buttfucking my best friend, no homo tho, and all of the sudden there was a bug holding on to my foreskin. In Dutch they call it a kontkever.