Refers to the fat upper penis area on a horrifically obese nerd like man who spends his time over eating at fast food restaurants and spending on average $65 - $85 a day on triple cheese burgers, fries and lard patties. Not able to have normal interactions with other humans, mostly because of people trying to harpoon the beast, or push him repeatedly back into the ocean.
Damn, that beast Harold has a ManFUPA. He is going to die if we don’t get him back in the ocean. Don’t try and take the cheeseburgers away from him, Don lost his arm that way and harpooned him last week with no effect. The spear hit him in the ManFUPA and was totally absorbed. Shelly saw Harold last week digging in his ManFUPA trying to find his penis when she questioned him on if what she saw was an inverted blowhole.