When someone holds their butt cheeks open and presses their anus against another person's forehead.
I fell asleep and I woke up to Jake giving me a Dirty Grandma
by Doonis August 7, 2010
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When u screw ur grandpa in the ass but not with ur dick but with a corn on the cob
Stan: I don't want you amd grandpa doing the dirty grandma again plz it's thanks giveing we gotta eat the corn
by Themanwithideaz March 31, 2022
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