The act of leaving a shit stain on the rib cage of a woman while receiving penile pleasure from friction between the mammaries. (SEE ALSO
HAWAIIAN MUSCLE FUCK AND PASADENA MUDSLIDE)

The definition I remember goes like this. Two people having sex, one proceeds to sit down on "victim's" chest, facing their feet. Sitter then proceeds to take a massive dump,(the wetter the poo, the better). As the poo runs into "victim's" neck, the pooper gestures with hand in an upward and downward pulling motion, as if honking a truck horn, while singing out loud "WWOOOOOOOOOO WOOOOOOOOOOO !!!!

bonus points awarded for:
-farting between the howls
-if the poop is wet and rolls around neck like a necklace
- wearing a captain's hat