v. When a woman (or man) takes a shit, does not wipe, and then has anal sex using the excrement for lubrication resulting in brown, shit covered testicles.
I can't believe she let you brownball her, what a slut. That's the last time I set one of my friends up with my mom.
A Brown Milk is where you take a tube a funnel and a carton of milk and you connect the funnel to the tube and stick it up your partners ass and pour the milk down the tubing and then drink it.
When you are performing oral sex on a woman and she sharts on your chin and mouth. Diarrhea farts are the most common form of Murphy Browns. Sometimes leaving a shit beard
I was going down on my girl the other night when she lost control of her bowels and Murphy Browned on my face. I looked like shitty Abe Lincoln
A guy that has a good personality/sense of humor/etc. but doesn't cut it in the appearance department. Therefore he is doable if you are drunk or he wears a paper bag over his head or both.