I'm not a mama's boy, I can do it by myself.
If we went somewhere together and we ran into my schoolmates, I was afraid they would think I was a mama's boy.
It can be a huge mistake for a woman to marry a "mama's boy" who is still "tied to his mother's apron strings."
It could be that they are connected to each other but I think there will be issues when either of them start dating because, you now, he's a mama's boy.