Brown the Runway 

When you receive a sudden fright, you could say that you almost "Browned the runway"

"I was on my way to work and some dope in a semi almost ran me over.  I thought I was going to brown the runway"

Brown the Runway by @WeMoveTheMasses October 20, 2012

Brown Tie Affair 

The act of laying a turd on a partner's throat, specifically horizontally so it resembles a bow-tie.

Jessica squatted and laid a turd across Brandy's throat. It was a brown tie affair.

Brown Tie Affair by bhurmam September 19, 2013

Brown Aussie 

When a World War 2 Australian pilot shits himself, ejecting fecal matter and animal semen into the cockpit of his plane, while being chased down by a Japanese pilot in the skies above New Guinea after having sex with a wallaby. This action turns the entire canopy of his fighter brown in color.

Rei Sen 1 to Rei Sen 2, that limey yellow toothed criminal just shat his pants! I got a Brown Aussie at 1 o'clock!

Brown Aussie by Rodney_Sexfart November 27, 2013

Brown Friday

The day after Thanksgiving when toilets across America scream and cry out for mercy.

Redneck Dan: Man... I ate so much of that danged Turducken and partied it down the hatch with them two cases of Red, White and Blur and Pabst beer that my danged toilet is quakin' at the thought of Brown Friday.

Brown Friday by The Somnambulist & Fast Reggie November 29, 2013

Brown Musket 

Brown Musket describes a sexual act which typically involves at least one male. It occurs when an individual takes a dab of excrement onto their finger and then inserts it into the pee-hole of an erect partner. The pinky is most often used, but more advanced 'Brown Muskateers' often graduate to the use of the larger digits when a willing partner is able to withstand what is usually considered an intensely painful experience. The source of the fecal matter used is irrelevant but most often belongs to one of the involved participants. Extra points are earned the heavier a musket is loaded. Common side effects include urinary tract infections, as well as pissing shit.

Mary was mildly disgusted, but not altogether surprised when Ian's dick tasted like shit after she delicately performed her first Brown Musket on him.

Brown Musket by slithering succotash August 18, 2016

brown tuna 

When a woman farts and queefs simultaneously, causing a mixture of odors.

I swear the chick in front of me in line just let out a brown tuna

brown tuna by Trader1933 January 15, 2017

Brown Harmonica 

When one performs analingus on a women while fingering her vagina.

“At an orgy, I received a Brown Harmonica from an Indian man.”

Brown Harmonica by Sheepluv420 August 13, 2017