Top Definition
1. A belief or doctrine that the size of a woman's breasts determine her significance to the world.

2. To be intolerant of certain boob sizes.
That guy never dates a woman with less than C cups. He's a total titsist.

I'm not titsist, I like them all.
by Thenontitsist July 20, 2009
5 Words related to Titsist

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