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1.
1.When a young lady wears a bra, which is too small for her ample bosom, and said bosom pops over the brassiere (even the nipple on occasion).

2. A slang term for a Maryland township.
1. Damn, look at that hussy, she's got a tittypopover! Bless her heart, she's due for a new brassiere.

2. I was in Tittypopover last weekend, they have the best cheese fries ever!
by Noah B. Marion July 12, 2005