putitinmybuttandcallmemama's definitions
Slang for the ball sac, which acts as a trampoline for the chin toward the end stages of fellatio; helpful for adding momentum to the bobbing motion.
"I was sucking Roger's dick, and his Chin Trampoline came in really handy because he was taking forever to blow his load "
by putitinmybuttandcallmemama October 26, 2014
Get the Chin Trampolinemug.