Tits that are saggy; sinking.
Guy: Dude, look, that bitch has nice tits.

Guy 2: More like tit-tanics.
by Entr' Acte January 16, 2010
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A woman with giant tits(boobs, breast, etc) abnormally large and beautiful tits.
As we walked down the mall we noticed a Tit-tanic and stared at her shamelessly.
by caidoz rellik 666 March 19, 2009
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Gigantically voluptuous breasts, directly opposite to tittles.
Jared: Good God, check out those tit-tanics!
Carl: She could sink an iceberg with those things!
by queermilk September 1, 2010
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