A phase during adulthood when a man first develops moobs.
Usually begins in mid to late 30s but
has been known to happen in late 20s in some male
office workers.
Larry:
Holy crap Frank, I didn't know you'd
reached mooberty already, your moobs are huge!
Frank: yeah it sucks, I've started getting moobsweat too. I wish my mother would buy me my
first man bra.