Your mother's onion 

Something you say to a person , to which you are speaking. It means your mother has fat thighs and vagina, therefore everything it that vicinity gets squished together. Creating a vagina/thigh area that looks like an onion would if you cut out a small slice from one side.

Good example: Your mother's onion was a nice ride last night.

Bad example: Your mother used her onion to make fajitas last night.

Your mother's onion by Thislethorne November 30, 2010

Your Grandpap a Trap 

Your Grandpap a Trap is the worst insult that overpowers even your mom gay, your dad lesbian, and your granny tranny combined! Only use in dire situations because if it is used, the insulted will die on the spot

John: Your mom gay lol!
Fredrick: Your grandpap a trap.
John: Nooooo! (Dies)

Your Grandpap a Trap by Storm_15 April 14, 2018

your mother cuts socks in hell 

this isn't a spoonerism but a fully-fledged insult in its own right. it should be used in pleasant company as a derogative term favouring the speaker and referring to the audience. whilst there is a passing similarity to words spoken by Linda Blair, the referential difference is clearly important. it is a calm approach to dissing, using only references to items of clothing and common actions (normally using scissors).

"I love you!"
"SO! Your mother cuts socks in hell"
"Damn right she does"
"I love your too!"

(loud audience applause)...
(shouted by band member on stage)... "Your mother cuts socks in hell"
(louder audience applause)...

your mother cuts socks in hell by Mariah Cary's Layered Syrup on my Nan November 4, 2006

Your Dad

A man, born roughly 16-30 years before you. Usually married to Your Mom. Responsible for roughly 1/3 of your upbringing, via monetary support. Also A major factor in childhood traumatization, and hereditary alcoholism. In addition, Your Dad is one of the few people GUARANTEED to make sexy time with your mom on a regular basis.

Your dad is at the bar, AGAIN

Your Dad by The DickTater January 2, 2011

your mum 

the best response to any question. can be used on numerous occasions including insulting someone, an answer to a question you dont know the answer for, just for the hell of it or in concjuntion with a sentence. NB: it is important to find out about the status of the other person mother i.e. if something upsetting happened to her etc so no true insult is caused. P.S. the only people who WILL get really insulted then are silly or stupid and dont understand it is a joke and think you are really out to insult their family...

Percy: S'cuse me you've got something on your face.
Pat: Your mum's got something on her face.
Percy: okkkk... I havent got anyone to go to Prom with.
Pat: I'm going with your mum.
Percy: stop saying your mum!
Pat: your mum
Percy: your face!
Pat: *silence*
Randomer: Percy dude that was harsh!
Percy: sorry Pat your actually really pretty, will you go to Prom with me?
Pat: I already told you i'm going with your mum!
Teacher: Percy stop talking in my lesson. Whats the answer to question 4?
Percy: Your mum?
Teacher: DETENTION! (note the inappropriate last use here where percy just doesnt know where to stop or how the phrase is used...note Pats master skills FYI she doesnt reall want to go to prom with percys mum duh!)

your mum by allknowingteen December 28, 2005

Your Mother's Cavernous Vagina

The long tunnel into the light that you call a vagina. See also, Hot Topic. And pink sock.

Dude, I went into your mother's cavernous vagina the other day and found these awesome pants!

Your Mother's Cavernous Vagina by Titty sprinkles. June 24, 2009

Your mom 

what dumbasses say when they cant think of shit. these dumfucks usually are retarted

yOu: hey whats up
dumbass: your mom
yOu: you are my mom, dumbasses

Your mom by BigDiqEnergy May 15, 2019