To get naughty and or do drugs
Sure I'm down to get brown tonight ,
When your cell phone accidentally falls into the toilet.
I finished my morning sit down, got up and heard the splash of my cellphone going down in the brown.
Having sex with a feminist, who removes your testicules, thus making you a homosexual, and engaging in lewd sex acts.
* no relation to singer/crackhead Bobby Brown
Comes from the song by Frank Zappa
After that dyke cut Jim's balls off, he went down like Bobby Brown, and shoved a pineapple up his ass.
When you're into anal sex.
Guy 1: You down to brown? ;)
Guy 2: Mmm oh yeah, that's one of my kinks!