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Exceptionally large breasts. Customarily spoken as a compliment and in awe in description of a woman only to one's buddies, not to the woman's face - unless you, and she, are completely ghetto.
Damn, that girl got infinititties! Stretching that bikini top to the limit!
by motifxf8 July 15, 2008
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It is the kind of titty that connects the regular boobage area and the back titties into one continuous tit. You do not know where it begins or where it ends.
Friend 1- "Did you see that fat man at the pool?"

You- "Yeah! His infini-titty went on for days!"
by buckshot_0001 November 19, 2009
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