A thing that u get when your fat and they jiggle
A man boob is a thing that jiggles
(noun) A heterosexual male who prefers boobs over ass, or has a general obsession with boobs. This is usually in regard to discussion between men about which body part (arse or chest) they find most attractive.
The antonym to the boob man is the ass guy.
(Two men discussing women)
Boob Man: Becky has the best rack I’ve ever seen. I want her so bad.
Ass Guy: Yea but her ass is flat as a pancake.
Boob Man: I don’t care.