Top Definition
When you pull the skin at the bottom of your nutsack and cover up your cock and balls at the same time to reveal grandmas wrinkled looking tongue
I showed Brian my grandma's tongue and it scared him.
by brian wiseman December 02, 2003
1 more definition
When you slip your balls sack out of your pants and give your friends a look at her wrinkled tongue.
Anyone wanna see "Grandmas Tongue"?
by J Barracho March 07, 2012

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