Grandbig 

Grandbig is your Big Brother's Big Brother when you're in a fraternity

My Grandbig is a dick

Grandbig by Ohmaqe February 18, 2009

Grandiginous oof 

The epiphany of having committed an, oof (a failure) in any given situation.

Jared: “bro, I’m so sorry but I just dropped your blunt and now it’s fucked.”
Tom: “are you kidding me!? Bro that’s a grandiginous oof.”

Grandiginous oof by Big Tom December 24, 2018

grandbitch

To be used in conjunction with the term, grandboss (your boss's boss). Grandbitch is what the grandboss calls you.

"I'm going to the bar. The grandbitches are running the models."

grandbitch by JZ via Gooch November 17, 2009

grandnigga 

The dope son or daughter of your son or daughter

Person #1 : what’s up my grandnigga

Person #2 : GRANDMA STOP YOU CANT SAY THAT

grandnigga by Guacamole... ah you know June 20, 2019