A term used when you hold a towel over another person's face while they try doing a sit-up. With the towel covering their eyes so they cannot see, another person stands over the blindfolded person with his pants down. While the person is struggling with the sit-up, the person holding the towel lets his griploose. This will allow the person to successfully complete his sit-up, with the suprise of ending up with his face in the other person's sweaty ass!
Man, we gave Steve a Brown Onion last week and he's still smelling that shit!
The life-long remorse suffered when you turn down a guaranteed fuck with a random girl, just because she is the Brown Onion of her group of friends, and you worry what your friendswill say.
God I wish I just nailed that pig in 1992 when I had the chance. I've got serious Brown Onion Syndrome now.
A brown onion ring is the end result and combination of heat, time, and not wiping one's anus good enough. A sticky, cake-like residue builds up around the anus, which causes a stinky, sandy sensation on the rim of the anus.
I just bought new underwear, and now I can feel a brown onion ring seeping out onto them. Damn, it's hotoutside!