A general term for a footie cunt, in polite company. Saves you shouting "you fucking fat cunty retard" when you can use the politer term "head the ball'. Originally meaning idiot in Ireland and widely adopted by people how detest football / football supporters.
Crazy person given to bouts of extreme violence. Has its roots in unregulated games of soccer, where the mildly insane would stick their head, in places where their feet shouldn't be put. psychonutcase
Watch yourself with him he's a complete headtheball, and could snap at any second.
Boys who enjoy yaoi (a genre in Japan that contains sexual and/or romantic relations between two men); literally translates to "rotten boy"; corresponding female : fujoshi