Top Definition
Soak your hand in water until it goes all wrinkly, then proceed to have a wank...

It feels like a granny is doing it for you.
I gave myself the granny last night.
by eggmeister19 July 18, 2010
The granny is when a (grandmother) takes multiple teenage boys to the point of orgasm using mayonnaise hand jobs and toothless bj's. This is followed by grandmother tucking the teens into bed and calling it a night.
I grew up receiving the granny thinking it was normal.
by Fire torch August 21, 2015

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