The type of
adult male that has long overstayed his welcome at his
parents house and is taken in by his granma, who mollycoddles him and treats him like a prince. He usually ends up living in granmas basement mooching off her.
A group of
BFF's are guy watching at the mall, when one asks the others, " Who is
that guy ?"
Another girl says, " Forget about that
loser, he's a mommomsboy."