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Gaandmasti is derived from the word Gaand which means the Arse. Basically gaandmasti means to do masti with your Gaand. Masti means to enjoy. So whoever is enjoying his arse getting fucked or loves his arse getting fingered can be termed as doing "Gaandmasti".
Bhonsadee wahan Gaandmasti karne gaya tha raat ko??

Chutiye!!! Gaandmasti mat kar.

Abey aaj Gaandmasti karne ka mood hai!
by DeadlyScholar August 19, 2011
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