that's not what your mother said last night 

similar to that's the sound your mother made last night. it also originated from SNL celebrity jeopardy. it was said by Sean Connery and is just another sexual innuendo.

Sean Connery: It's been a long time, Trebek.
Trebek: Not long enough.
Sean Connery: That's not what your mother said last night!

that's not what your mother said last night by gorillaguy987 May 23, 2009

the best part of you dribbled down the crack of your mother's ass 

Indicates a person that completely and totally screws everything up all the time.

You dropped the brewskies on the way in to the partay? the best part of you dribbled down the crack of your mother's ass.

the best part of you dribbled down the crack of your mother's ass by no can clammupah April 30, 2006

Not Your Mother's Beaver

Hair coloring is used to add body, control frizz, make hair more vibrant and interesting, even highlight other attributes; as well as cover up the signs of an aging beaver.

Creston used "Not Your Mother's Beaver" to color her gray pubic hair; for a more youthful and eye catching beaver.

Not Your Mother's Beaver by Aneefa June 5, 2016

clean as your mother's reputation

deadset my heart and soul, clean as a kiwi cranny-bum

choice bro,now that's as clean as your mother's reputation

clean as your mother's reputation by S & A June 5, 2007

Get back to your mother's vagina 

whenever someone wants to tell you to "get back to the kitchen", you simply reply, "get back to your mother's vagina", ya pansy!

cunt: "get back to the kitchen"
woman who won't take shit from pansies any longer: "you get back to your mother's vagina..because that's where you came from, ya bitch!"

Get back to your mother's vagina by c.c. 2012 January 7, 2012

in your mother's

An expression of surprise or disgust. Derives from "fuck your mother in the pussy," but excluding the vulgar words.

Note that if you're a guy, you cannot use this expression in front of a girl, and vice versa.

Scene I
Son: Look at that Ferrari, Dad!
Dad: Oh hell yeah, that's a nice car IN YOUR MOTHER'S!
Son: In my mother's WHAT??
Dad: You know WHAT!

Scene II
Brother 1: Your drawing sucks!
Brother 2: Yeah! In your mother's!!

awesome, sick, sucks, blows, bites, dumb

in your mother's by dangnuggets June 1, 2016

In your mother's eyes 

It means that something looks bad. Or if you wear something that's totally ugly and your mom thinks you look "handsome" or "pretty".

"Hey, guys does my outfit look good?"
"Only in your mother's eyes."

"Oh my god, I just drew the best Shrek!"
"Pfft, only in your mother's eyes."

In your mother's eyes by The_Air101 October 1, 2020