1) A spineless person, perhaps known for sucking dick. See also, bitchcake.
2) Someone who takes it in the butt or mouth, and hence becomes a cake of jizz.
3) Paris Hilton.
Note: May be followed by the phrases McGee, McCoy, or Philips to make it a nickname for the person in question.
(v) to soak another intentionally in a large quantity of jism, without that person's permission
Despite warnings from my girlfriend, I jizzbaked her while she was lying on her back, shooting a load all over her stomach and face, and then made her get up to wipe it off.
When you realize your hot girlfriend fucking another dude while you watch is showing way more enthusiasm than she ever did with you. It was your idea to start with and you had to work hard to talk her into it. You end up sitting in a chair for an hour or two pathetically stroking your now tiny dick.
She was spreading her legs farther apart than L.A. and New York, moaning and begging for him to thrust his giant penis harder and farther into "my hot wet pussy". I thought it was going to be a "turn-on" but I was sadly jizztaken.