Brownie Bomb 

Verb. and Noun. This is the act of "accidentally" going from vaginal to anal, and then directly back into vaginal intercourse, using the "Oops wrong hole!" excuse.
This is meant to purposefully cause a yeast infection of the WORST caliber. (Solely reserved for those women who are cheating on you or on someone else with you.)

Lou:"Brad, i don't know how to tell you... but i think Melanie's cheating..."
Courtney:"Brownie Bomb that bitch."
Brad:"Fuck yeah."

Brownie Bomb by C.S.Kent and Common Crew February 22, 2007

Brownie Bomb 

To defecate in the exhaust pipe of one's vehicle

John's brownie bomb backfired onto the neighbor's house, dog, and front yard.

Brownie Bomb by Plarmtastic Phantom December 16, 2009

brownie bomber 

When you climb up a ladder then take a dump on someone then throw sprinkles on them

I totally gave that girl a brownie bomber last night

brownie bomber by jebediah mcdowell June 18, 2011