brownie

A black person with down syndrome.

‚Yo, who‘s that ‚Brownie‘ over there?‘
‚That’s just Jermane Jr.“

cook

An expression used, to describe someone excelling at a particular activity. Synonym to lit, on fire, in the zone...

Person A: "What's he doing over there?! Who tries a 360 no scope?"
Person B: "Wait a sec, let him cook."