When you and a white male friend have sex with the same girl at the same time. As you are fucking her and she is giving him head, you reach across her and give him a high five signaling that it's his turn to fuck her. It's like when a wrestler tags his partner into the ring during a tag-team match.
" I can't believe dat dirty bitch asked me to join in wit dem! I ain't down fo no high five a white guy."