When a man takes a shit massive enough to glide against the edge of his nut sac, giving his testicles a brown hue.
"Sheesh tom, you're testicles are really discolored, what's wrong with them?"

"No worries, I just brown ballooned myself."
by TheDirtyHoledMole February 18, 2016
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Brown Balloon Knot is a phrase used to describe the look of the anus.
Next time you have hold of a blown up balloon, take a look at the ring above where the knot is formed. It looks like an arse hole. The brownness obviously comes from the colour of shit.
I finally stuck it in my girlfriend's brown balloon knot last night.
by Stainos September 4, 2006
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A loose asshole that loses elasticity after taking more than 7 inches in diameter of damage. From gay sex or anything else shoved in that hole. It will look like a pink sock if done correctly.
The Navy has the most men with blown out brown balloon knots.
by Shitshow1986 June 29, 2022
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