A racist name for apple crumbles or pie. Popular in the 1950s.
"You always got these very lumpy mashed potatoes on steak night, and for dessert you got Brown Betty, which nobody ate, except maybe the little kids in the lower school that didn’t know any better--and guys like Ackley that ate everything." (From the Catcher in the Rye, by J.D Salinger)
When you take a dump in the tank of the toilet so that every time you flush, the water stays brown.
Someone dropped a Brown Betty in my toilet and now the water won’t clear up
Anal sex on your lunch break.
"Sean and I just had a brown nooner and now my asshole is sore."
was that a blue keenan, the keenan brown is so blue
When the skin is in contact with the wind long enough to cause a temporary color change to brown.
His face was wind-browned in a matter of days after he took the job.