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 :(