your grandmother 

A nice woman who likes to make cookies and eat ass

Your grandmother destroys dildo

your grandmother by PussyPower611 December 14, 2019

your grandmother’s titties 

A sarcastic way to avoid a conversation that you don’t want to have

Person 1: Hey, what’d you get on the test?
Person 2: Your grandmother’s titties
Person 1: Damn..

your grandmother’s titties by Silograndma December 9, 2017

Is your grandmother Japanese? 

Complete disbelief at your lack of situational awareness.

"Oh my God, do you know where you are? Use the handrail on the escalator. Is your grandmother Japanese?"

Is your grandmother Japanese? by JormanThoad December 1, 2020

go fuck your grandmother 

something you say when you're really pissed

go fuck your grandmother

ok i will motherfucker

go fuck your grandmother by stupidassedbastard October 21, 2015

Bathing Your Grandmother 

Blogging.

People who don't know the definition get pretty freaked out when you use it. Tis funny.

Hey
Hello!
What's up?
Bathing your grandmother.
Oh, what about?
The strangest thing happened today! I just had to write about it!

I am bathing your grandmother right now.
... no. Stop. Please. Why did you even bother telling me this?! I never asked to know! meh.
(This person may or may not have known that bathing your grandmother means blogging)

Bathing Your Grandmother by Welcome to Ohio September 23, 2009

teach your grandfather to fuck 

to try to teach somebody something that he knows far better than you.

He knows how to write good English. And that is too far better that you. Do not teach your grandfather to fuck.

teach your grandfather to fuck by uttam maharjan August 17, 2010

Your grandfather bisexual 

This is one of, if not the, strongest "ur *relative* *LGBTQ+ trait* sentences around. Saying this will not only vaporize the person you were talking to, but have very bad effects on anybody around. People very nearby (5-10 feet) will die or (at 10 feet) fall into a coma. At 11-25 feet, people will contract pontentially fatal diseases and get radiation poisoning. At 26-35 feet, people will have lesser diseases, like diarrhea or hiccups and some radiation poisoning. At 36-50 feet, people will get a tiny amount of radiation poisoning and get a cold or the flu. At 50 to 150 feet, people will feel the shockwave of you saying "your grandfather bisexual", and feel as though you had just insulted them personally. DO NOT TRY THIS AT HOME.

Joe: We could have avoided all the radiation fallout of the nukes in WW2 if we had just sent them a letter saying "your grandfather bisexual".
Wyatt: NO! WHAT HAVE YOU DONE?!

(Wyatt is dispersed throughout the known universe.)
(Everyone within 150 feet feels the effects of Joe saying "Your grandfather bisexual".
(Joe gets 5000 life sentences with no parole from the President of the United States.)

Your grandfather bisexual by Rennie22 March 12, 2018