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Desciribes the hardness or fortitude of an object or person(makes you wonder who's tits they're feeling).
by megaman and bass November 14, 2007
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When something is so incredibly rock hard that there is no other way to express it.

Harder than a black man's raging boner, something that is "hard as tits" is capable of breaking reinforced concrete, and in some cases diamonds.
DAMMIT, these fish sticks are as HARD AS TITS!!!!!!
by MissMikkyy November 12, 2011
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