look up any word, like blumpkin:

2 definitions by Natarii Shinichi

 
1.
A Pathetic attempt at an Insult, Usually by immature or young people.

Or, Sometimes used to be sarcastic, annoying, or otherwise.
Sometimes followed up with an "OOOH!! U JUZT GOT BURND LOLOLOL" Kind of statement.

Sometimes spelled in chatspeak like:
"UR MOM"
"UR MUM"
"UR MAMA"
Immature/Annoying Your Mom definition:
Kid: "Is there any continent larger than Asia?"
Other Kid: YOUR MOM!! LOLOLOLOLOL
Random Kid: BUUUUUURRRN

The "Pathetic" Definition Example:
Guy: Your such a loser.
Second Guy: Your Mom!
Guy: That comeback is stupid.
Second Guy: UR MOM!!!11!

Sarcastic Definition example:
Dude:Hey Dude what's up?
Random Dude: LOL YOUR MOM.
dude: HAHAHAHA /sarcasm
by Natarii Shinichi April 18, 2009
 
2.
An Internet Meme from the quote Wolf used in Starfox 64.
Often comes after something said by another person.

The word "Do" In the meme is commonly changed to whatever the topic relates to, Like "Can't let you eat that." Etc, Etc, Etc...

Usually used in sarcasm or to be annoying. Most people don't take it seriously, because it's really not.
n00bs will usually go all "N00b-Fu" On you if you use it at the wrong time though.

Protect your e-Crotch.
Robber: THIS IS A HOLD UP! *Points a gun*
Random guy: CAN'T LET YOU SHOOT THAT

Guy (Talking to another guy): So, I'll meet you at the cafe in ten minu-
Random guy (Interupting): CAN'T LET YOU DO THAT!
by Natarii Shinichi April 18, 2009