Star, ethnic difference here, what is a "pooper"?
I think the "pooper" is the one who leaves...erm...aromatic evidence behind him, after visits to the men's room. I think Star's words were "not fit for man nor beast", or something to that effect.
As for Living-at-home dude...I really do think that it takes some people a lot longer to finish cooking than it does others. And having enabling parents just doesn't help matters.
My difficult child-brother lived with our difficult child-parents until he was nearly 30, when he finally moved out at the insistance of his then-fiance.
I got endless amounts of grief from them for moving out when I was 17 (in Ontario, you can leave home at 16). They pressured me to come back, offered me money, a car, all sorts of things...it was really dysfunctional. I just wanted to grow up and do my own thing, and they were desperate to stop me.
Weird.