Definitions by JFDI

providing the brown 

The person who is receiving penetrative anal sex is ‘providing the brown’. This is this is similar, but different, to someone who is providing the pink.

Partner 1: “Do you like to receive anal sex?”
Partner 2: “Yeah, I love providing the brown.”

providing the brown by JFDI March 4, 2016

providing the pink 

A person who receives vaginal sex, either penetrative or oral, is providing the pink.

Friend 1: “Did you have sex last night?”
Friend 2: “Yeah, I was providing the pink.”

providing the pink by JFDI March 4, 2016