Known as GG. Has the coolest grand kids and is the life of the party. A Great Granny always has mints in her purse.
You have the coolest Great Granny.
by spud stud September 14, 2018
A Great granny blaster is a young man who is groomed with beer and pies. This leads to the great granny wanking you off while you finger blast her dusty old snatch.
by Lewg83 October 20, 2023
by Dem-Definitions April 21, 2018