Top definition
The act of using human feces for lubrication for vaginal sex.
Bob: So, did you get some ass last night?
Tom: Oh God yeah, the chick even let me brownie tunnel her!
Bob: Holy shit! Nice dude!

Sam: So do ya think we have time for some brownie tunneling?
prostitute: well.. If you insist. Make sure you pull out though..
by Noah Hizzle May 01, 2008
Mug icon

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug