when a man inserts a fly into his urethra before performing sexual acts upon vagina, quickly pulling out and then sticking in the anus when about to ejaculate, releasing the fly into woman's asshole projecting the fly throughout her body and out her mouth. (successful if fly remains alive).
A super crazy sexual position only done south of the border. Involves three prostitutes, four bottles of corn syrup, a sack of flour, a size 7/8 socket wrench, a pound of ground cinnamon, and a donkey with a ski mask.
Man! I had the best night! Totally got me a Mexican horseshoe in Mexico City! Shoot yeah the herpes are working!