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undissable is when you diss someone and they totally backfire it on you.
Mack: ur a fag steven

Steven: thats your opinion of me but the fact is im a straight young male

Mack: wow u are undissable
by mgills16 January 02, 2010
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Aug 9 Word of the Day
Large, beautiful breasts that are keep well consealed and initially appear to be much smaller and less impressive than they actually are until unleashed.
I think Alicia may have some real sleepers.
by KABT October 26, 2007
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