Granny ass - One with a severe absense of "Junk In That Trunk". It can often be traced back to the looks of an elderly womans hind quarters which may be flat and not what might be reffered to as "eye candy".
Man Steves new girlfriend has real granny ass.
by J.A.G. January 1, 2006
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IS THAT DJ, YEAH TOTALLY! why is his bag so low, obviously to cover that graz (granny ass)
by jordy.n September 7, 2010
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When you fucking a girl and she asks you to do her doggy style and you realize she was wearing butt pads to enhance her flat wrinkly ass!!!
Trav/sabs
I was so drunk last night this ass granny was my only option.
by Trav/Sabrina June 5, 2015
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