The game in which a group of ticklish people sit in a row on the sofa, couch, bed etc. and each one has a person to tickle them.
The one that laughs or squirms first will be pinned down by everybody else and tickled until they wet themselves.
He came home from his friends house and said he had played Loudest laugh, wettest pants. I didnt know what that meant, but he smelt bad.