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3. Hard as tits
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!!!!!!
1. Hard as Tits
Desciribes the hardness or fortitude of an object or person(makes you wonder who's tits they're feeling).
"Goddamnit! These fishsticks are hard as tits!"
2. hard as tits
Describes the strength, fortitude, or solidity of an object.
Goddamn it, these fish sticks are hard as tits.
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