Yeah, well your mom was really good last night 

A comeback, usually signifying that the person saying this phrase can't win the argument.

"Go fuck yourself, you piece of shit whore"
"Yeah, well your mom was really good last night"

Yeah, well your mom was really good last night by Assholes Inc. September 10, 2003

Yeah, well your mom was really good last night 

1.The universal comeback*.
2.The comeback to end all comebacks*.
3.The most overly used comeback ever.

*in theory

"Well. . .Your an asshole. . .asshole."
"Well, Your mom was really good last night."
"Dammit"

Yeah, well your mom was really good last night by Fatass February 13, 2003

That's What Your Mum Said Last Night 

The absolute ultimate comeback. Can be used in any situation, with a maximum final effect.

Sam: "you are a cockbite"
Alistair: "yeah, that's what your mum said last night!"
*sam slaps alistair*

That's What Your Mum Said Last Night by Static November 10, 2003

I slept like coarse woody debris last night. 

A foresters way to say:
"I slept like a log last night."
"I slept well last night."
"I slept like a baby!"
"That was some awesome sleep!"

"Hey! How did you sleep last night?"

"I slept like coarse woody debris last night."

"No way! That's awesome."

I slept like coarse woody debris last night. by forestrychick November 30, 2011

Yeah, well your mom was really good last night 

Ok if you leave my mom out of this
Ill leave this <point at ur member> out of your mom!

ComeBack for most your mom jokes

Yeah, well your mom was really good last night by GUY November 27, 2003

when i met you last night baby

The introduction to a morning-after speech dismissing a hoe popularized by Nate Dogg through his lyrics in popular G-Funk songs "XXXplosive" and "Ain't No Fun (If the Homies Can't Have None)"

When I met you last night baby

before you opened up your gap
I had respect for you lady
But now I take it all back

Cause you gave me all your pussy
And ya even licked my balls
Leave your number on the cabinet
And I promise baby, I'll give ya a call

Cuz IIIIIIIII have nevERRRRRRR met a giRLLLLLLLLL
ThaaATTTT I looOVVVED in the whole wide WorLDDD

when i met you last night baby by Doc Andre December 3, 2009

thats not what your momma said last night 

a comeback or insult saying you slept with a persons momma and she was moaning and such

your ugly thats not what your momma said last night

thats not what your momma said last night by Groundhog July 26, 2006