Referenced in The Wedding Singer by Rob. Meant to describe a fine looking woman who has phenomonal attributes, which you would obviously tap. It is a somewhat derogatory term to refer to a woman as a mere piece of meat, which you would easily take all of.
"Hey man did you see that girl Stacy at the frat this weekend?"
"Oh hell yeah, she was Grade A Top ChoiceMeat."
Another word for a binder usually used among those with moobs. Usually used if they want to talk about their binder in a place where they don't want to reveal that they have a large chest.