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2.
Used to express the extremities of some situations. Originaly quoted from tourrettes guy in reference to his fish sticks being hard.
Oh man, im hungry as tits!

I stayed up all night playing xbox, im tired as tits now.
by Gillbag May 26, 2010
 
1.
A suffix used to add emphasis to something, it can related to absolutely any situation.
Zach: "you did you see that bitch?"
Keegan: "yeah man she was hot as tits"

Jesse: "that bitch i ate out last night was fishy as tits"
by Biggz89 June 27, 2008