Typically given to those in the restaurant and hospitality business; going to great lengths to get tipped. This includes flirting, manipulating and just about anything to give the illusion that we'll hook up with you for your cash.
Did you just see how she was eye fucking him? She's a professional food prostitute!
Someone who eats disgusting things for money
Chris: Hey Jon, I'll give you five bucks to eat these pig placentas
Jon: No way man I'm not a food prostitute