When a male inserts both his pointer finger and pinky finger into a females anus, then takes the pointer finger and inserts it into the females vagina while neighing to mimic a horse.
“Hey did you hear what Frank did last night” “Yeah he gave a hooker a dirty horseshoe”
A woman lays on her back with a man's dick between her tits while a group of men ejaculate all over her chest.
Tommy and Kelly had to take a shower after a dirty horseshoe sandwich with Tommy's BB buddies.