The rare ability for a woman to suck the cum out of a man's cock as fast as he is able to blow his load. (caution: the man may scream, gargle, or black-out)
T'was throwin' a few back at ye old pub and locked me eyes with a big jawed beauty. Said to me mate: Ahoy, look at the mandibles on that thing -- that one there's a bonegulper!
A sex act in which the man pours ketchup and mustardin between the woman's butt cheeks, then puts his penis between said cheeks and squishes them together while saying "Do you expect me to talk?"