A measurement equal to the ammount of breast that won't fit in ones mouth.
DAMN!!! Look at them double-D's. That's some surplus!
by futureryansummers October 08, 2007
while dickin' a female down, that's what you can hold or make bounce real fast : a piece of breast or ass.
we like them not too fat and not skinny at all, just wit that lil surplus, you know.
by Swoopa April 23, 2009