A term used to describe when a friend, family(
sibling, etc.), or person is living off for
free of the parent, or being treated with childly care. It doesn't have to be in terms of
money, it can also be on a emotional scale, or what have you. Hence, "sucking on the tit".
older brother conversation with girlfriend:
Erika: Hey
Jesse, how come you don't speak to your little brother anymore?
Older brother: I'm tired of
Ezra not having a
job and my mom taking care of him. He's 21 years old, he has to stop "sucking on the tit".
Erika: But he's still your brother :(