warm brownie surprize

Best definition
warm brownie surprize
While having anal sex you suddenly pop both your balls in her ass and bust a nut.
(ME) That bitch is so fine i would definitely put my balls in her ass!

(YOU) Give her a warm brownie surprize.

warm brownie surprize: define #2
Warm Brownie Surprizefood
When you manage to get ballsdeep in a chicks ass then pop your nuts inside and blow a load.
Your sister is so damn hott i gave her a Warm Brownie Surprize and left my nuts in her ass all afternoon.