mom: "Just drop it already."
piece of crap (idiot boyfriend): "No, you drop it!"
mom: "Can you just grow-up already??"
piece of crap (idiot boyfriend): "Make me!!" *in a mocking voice* "Can't you just grow-up already??"
It is an operating system that is disliked by the creatorof it(or CEO of the Company that released it), or the users. For example when Bill gates was interviewed and pointed out that he doesn't like vista.
"Man, after Bill Gates said he doesn't like Vista, it made me feel like I'm using a piece-of-crap-OS!"