get brain v. to receive fellatio. (source: Double-Tongued Dictionary)
Further reading
An anadrome is a word that forms a whole new word when you spell it backwards. For example, the word “stressed” spelled backwards is “desserts.” Some people’s first names are anadromes. There’s the girl named Noel...
For rock climbers, skiers, and other outdoor enthusiasts, the word send has taken on a whole new meaning. You might cheer on a fellow snowboarder with Send it, bro! — and being sendy is a really great thing. Plus: a nostalgic trip to Willa...
Also “skull”
Yes, but “get skull” is too well-known to bother with here.
Homeboy gonna get him some skull tonight?
Also gobbie/gobby.
he gonna git some brain, in otha words homie gonna git sum head haha