The act of using a black marker to draw a japs eye on the top of a bald mans scalp so that from an aerial view the subjects head has the appearance of a massive bellend.
This is put to best use when the baldy in question has suffered sun burn or has high blood pressure. This gives the act of bellheading a far greater authenticity as the added pink colour further resembles a big shiny bellend.
It is best to bellhead somebody when they are asleep or highly drunk as this can, in some circumstances, provoke aggression as few people like to think that their head resembles a massive shiny bellend.
Fancy going bellheading today Brad?
I know the perfect individual for a good bellheading.
I just bellheaded that drunk chody little dwarf.
I woke up to discover I'd been bellheaded in the night.