That's the grandma, means "it is what it is" or "that's awesome!"

Can be used when somebody announces something in any context and you don't know what to respond say " That's the grandma."
"Have you been to Warp Tour?"
"Yeah man! That's the grandma!"
by MajesticFox666 October 16, 2018
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your bong, new hip nickname in the sand hook/monmouth county are in nj.
Dude 1 : Yo, check my new grandma!

Dude 2 : Damn! She hits like Mike Tyson son!
by Wayneo Insano May 8, 2009
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Grandma is a slang, white term for nigger.

The word has remain underground and unknown for quite some time but is arising to the surface.
Dude, that Grandma is stealing my car!
by anoyomous69 June 14, 2008
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A mother of a mother. If she has grandchildren , then she is a builtin free baby-sitter and or someone that can help or watch your children for you , since they don't have anything else to do.
Mother: Hey mom what are you doing tonight?

Grandma: Nothing just watching NCIS

Mother: Then can you watch Timmy for me ?

Grandma: What are you doing? Yes I can
by Some who knows! January 27, 2014
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A mean old hag that blames you for everything that ur younger sibling does and tries to ruin ur life. She is a fat "lady" that makes u want to kill ur self.
Girl: I'm having suicidal thoughts.
Therapist: It's probably her grandma's fault.
by A_GIRL2018 April 7, 2018
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(noun) One's first lay. Characterized by her lack of attractive features and old age.
John: Hey Steve, how's that grandma of yours doing?
by Thomas Marchet February 4, 2008
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