Ah, manboobies. EVERYONE knows what they are. It's what happens to an overweight man's chest. Not to beoffensive. Also, it's what guys get when they get breast implants. Umm....that's really wierd. Guys, don't get man-boobies.
Contrary to popular belief, not all manboobs are caused by fat. Some men are naturally born with higher amounts of estrogen then others and once they hit puberty start growing actual breast tissue. In fact, almost 1/3 of evry male has some form of it, though it may not be noticable.
But yes, most manboobs are just fat on overweight people.
Large mounds of flesh that develop on the chests of obese men where pecs should be. These often overlap fat rolls, have distored cylindrical, round, or lumpy shapes, and are sometimes hairy.