YuorMom 

Being best friends with your aunt

Oh my god yuormom and I are like princess.

YuorMom by ghofran667788 September 27, 2021

Yourmomistan

A fat country whose major import is mansauce. Major trade industries are snowballing and teabagging. Clergy should be alert when traveling to Yourmomistan as many incidents of bishop bashing have been reported. Yourmomistan is easily accessible by train, as the Cleveland Steamer runs through there regularly.

Come to Yourmomistan! When you're there, come again!

Yourmomistan by bigtrick October 30, 2006

Yourmomism 

The belief that everything was created by your mom.

... She got around.

Yourmomism:
Finally, an explanation.

Yourmomism by Waka waka Om nom nom January 6, 2011

yourmomitis 

a disease deeply affecting the brain and mouth as a result of one saying too many "your mom" jokes.

Cassidy - "Doctor! Doctor! Something is wrong with me!"
Doctor - "What seems to be the problem?"
Cassidy - "Your mom's a problem!"
Doctor - "Oh no.. it seems you have a rare case of yourmomitis.."

yourmomitis by your mom has a fake name September 6, 2011

Yourmom.com 

A url quite often used as a password or insult to a mate. A heightened version of popular comeback “Your mom”

Keith: *Knocks*
Abby: What’s the password ?
Keith: Yourmom.com

Yourmom.com by LindonSound_13 October 17, 2019

Yourmomium 

The largest, densest, thickest, fattest element on the periodic table.

Symbol Ym, common isotopes include Ym-21 and Ym-69

1- My favorite element? Yourmomium...
2- If you react Ym, yourmomium with Yd, yourdadium, you might be lucky and get Kd, kidium!
3- Yourmomium is the heaviest element known to man, and is so heavy, even one atom is too much to carry...
4- Yourmomium makes great cookies...

Yourmomium by SCIENCE, YOU FOOL October 25, 2017

Yourmomportunity 

Moments in conversation when there is a chance to chime in with a classic, "Your Mom" joke.

Mike: I found that under the couch, dude. Don't put it in your mouth.
Liam: Your mom said not to put it in her mouth but I did it anyway.
Adam: Nice capatalization of the yourmomportunity there, broseph.

Yourmomportunity by Adam Ponzek November 13, 2007