If you're in a club and you don't really know if you should already go, wait for 3 songs in a line to suck, then go. Also known as Three Tune Condition
Jay: Shall I leave already?
Mitch: Dunno, use the Tri Song Clause!
Julie: Nah, i hatet the last three songs, dunno if I should stay any longer...
Mary: The Tri Song Clause says you should!