A phrase meaning lame, disappointing, generally not cutting it.
Some guys watching a sporting event in which one of the athletes muffs it:

"That was weak tit man"
by Latenite June 7, 2006
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an expression when it comes to drinking if someone can’t keep up.
Charlie you’re a weak tit. You cant keep up with the rest of us.
by Steve the bigdog February 8, 2006
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