third down brown

penetrating someone twice in the vagina followed by a sudden switch to the ass (then usually shouting TOUCHDOWN)

dude, i totally gave her a third down brown last night

down to get brown

To get naughty and or do drugs

Sure I'm down to get brown tonight ,

Down in the brown

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.

Down to Brown

When you're into anal sex.

Guy 1: You down to brown? ;)
Guy 2: Mmm oh yeah, that's one of my kinks!