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When a man (or a woman) does something for the hopes that he will receive boob. Usually within the context of money, like paying for dinner so that something sexual will happen after.
Alex: Are you going to prom?
Brian: Nah, it's titty expensive.
Alex: What?
Brian: If I ain't getting titty, it's too expensive.
by Shollyboster May 27, 2017
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