Said of someone who has frequent, overwhelming, all encompassing hankerings for meat; usually red, and commonly undercooked.
Shocked Spectator: "Dude, your mom is really, uh, going for that rare prime rib."
Embarrassed Offspring: "Yes, yes she is. Please do stand back, and accept my offer of protective eyewear. She becomes quite vigorous at feeding time,especially if she can smell blood. As you can see, she has quite the Meat Tooth.