The act of sticking your thumb up your butthole then subsequently inserting it in your partner's butthole. Both parties then lick the content of their own thumbs similar to when licking the brownie batter off a whisk.
My girlfriend and I had some brownie mix after our Chipotle date.
My partner and I used brownie mix to spice up our relationship.
My partner and I used brownie mix to spice up our relationship.
by Browniemixlover69 August 8, 2021

by Tchornibog January 1, 2015

1. The little bit of poop in your underpants that leaks out when you are driving and don't have time to pull over to the bathroom. Your underwear will soak up any moisture and give it the consistency of a fudge brownie. It may also be the result of a shart while driving.
2. Having a passenger give you a rim-job while driving.
2. Having a passenger give you a rim-job while driving.
1
A-"Yo Duane did Mary give you some road head on your trip?"
B-"Nah dude, I had some road brownie and almost made her barf in my lap."
A-"I hate it when that happens."
2
A-"Hey baby it's gonna be a long drive, how about some road brownie?"
B-"Sure, just as long as you don't shart while I'm down there."
A-"Yo Duane did Mary give you some road head on your trip?"
B-"Nah dude, I had some road brownie and almost made her barf in my lap."
A-"I hate it when that happens."
2
A-"Hey baby it's gonna be a long drive, how about some road brownie?"
B-"Sure, just as long as you don't shart while I'm down there."
by Croganizer March 1, 2014

A game; When a girl is twerking, have her shit, either in her pants or on the floor. The players pick up the shit, bake it along with brownies, and the ones who eats the shit loses.
by Hallowedbthyhandle March 2, 2015

by Birchbitch March 4, 2018

by Jackson davidson October 9, 2017

Guy 1: Why is their dried shit tracked in your house?
Guy 2: Oh that, I stepped in a sidewalk brownie yesterday.
Guy 1: And you didn't clean it up? Nasty dude.
Guy 2: Oh that, I stepped in a sidewalk brownie yesterday.
Guy 1: And you didn't clean it up? Nasty dude.
by Eurodance4ever October 9, 2019
