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.
King Tut had manboobs caused by estrogen. I saw it on Discovery Health Channel.
by Mike April 22, 2004
Get the manboobs mug.
Someone who has been eating way too many damn mini-wheats and hasn't been getting laid frequently enough to work them off.
Damn, Terry has not gotten laid in 22 years......
by TK May 19, 2004
Get the manboobs mug.
what are the things you got sticking out of your shirt
MAtt Cook has some pointy manboobs!
by Zachizzo November 3, 2003
Get the manboobs mug.
boobs on a man, also pronounced "m'noobs".
AAHAHA hey dude you've got m'noobs AAHAHA
by Fugerko.? November 19, 2003
Get the manboobs mug.
Large breasts found on fat male Earthenoids. Whether or not they contain milk is not known. No one has the guts to check.
Daniel's manboobs scared the shit out of me in the changeroom.
by Bastardized Bottomburp March 21, 2003
Get the manboobs mug.
An abnormal size of the male chest..where on a fat or skinny guy has (breasts)
Vince made me feel his 'manboobs' in the hallway!
by Amber December 9, 2003
Get the manboobs mug.
Dangling mass of fat found on males that dont get out nearly enough. I emphasize the last part because they clearly need some exercise instead of sitting on their asses all day playing video games and watching tv.
Christ, that dudes got manboobs bigger than ur tits jessica.
by ZX2 Stud December 6, 2003
Get the manboobs mug.