Taint Whip

When struggling to maintain an erection during intercourse due to excess alcohol consumption, rather than penetration the flaccid penis just slaps against the taint

Brah #1: What happened to you last night?
Brah #2: I left the bar with that chick that girl who thought Sandra Bullock was the funniest talent in Hollywood, but instead of laying the pipe, the combination of Long Island Iced Teas and her recital of lines from The Heat caused me to taint whip for 3 hours until we both gave up.