When a girl is on her period, eat her out from behind. When there is enough blood in your mouth spit it in your hand. Then reach your arm between her legs and slap her in the face. Then yell "Headshot!".
Backwards Cameltoe-Just below the curvature of the buttocks, one may see the "droop" of the lips forcing themselves out; stretchingthe pants where a man's taint would be.
When your fucking a paraplegic so hard that her wheel chair tips over, but your already committed so you throw her limp legs over her head and throw it in the mud tank for the grand finale!
Danny fucked up his engagement gong to Aruba with the banana shirt instead of his fiancee , so he found himself doing the backwards wheelchair with a Norwich crack whore...
Tuna sub backwards is "bus a nut". Men use backwards tuna sub when they're too ashamed to admit during sex that they're going to climax much quicker than they had previously thought.