A baby mama's mama that is grandpaing baby mama sweet child.
Thats big grandma but don't tell little daddy
by BigMamaSweetAss October 31, 2007
Get the big grandma mug.
"Big grandma" is one of your two grandmothers who is the elder one. Big grandma could also be the great-grandmother.

(Think of it like "big brother; big sister" bigger as in older.)
My "big grandma" is my great-grandmother and she's older than my grandma.
by StrawberryRedHead July 29, 2011
Get the Big Grandma mug.
Legendary figure who killed hitler, bin laden, escobar. She castrated all of them, and kept their balls.
Big C's Grandma is legendary bro.
by Goonginator April 12, 2022
Get the Big C's Grandma mug.