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1.
Short for little titties.
Yeah, I've seen her chest. She's got litties like a ten year old boy, but at least she has an ass to make up for it.
by croutonthegreat December 15, 2008
 
2.
The word 'litty' refers to 'literal spaz'. Someone who lacks intelligence or any sort of common sense can be marked as a litty.
If someone asks if Anchorman the film is a true story you could reply with " you are such a litty!"
by feralchild June 30, 2009