look up any word, like tribbing:
 
1.
When a mom says something nice about her son and inadvertantly burns his friend in a way so clever that you wonder if it was actually intentional.
friend: "chris is a bad speller"
mom: "it's because he speaks french"
friend: "oh man, that was a total mom burn, I'd trade my mad spelling skillz to speak french"
by observatori March 26, 2007
 
2.
Twice the power of a regular burn.
Teenager: "Hey, mom, check out these definitions I found!"
Mom: "Oh, when you were supposed to be cleaning your room?"
Teenager: "Oh snap."
by Aardvark March 16, 2005
 
3.
a halarious burn, usualy made by mothers.
teen; do you love me mom?

mother; i dont know i will have to think about it for a while

teens friend; oh snap you just got mom burned
by dontshootiamyou March 09, 2007
 
4.
a halarious burn, usualy made by mothers.
girl: i'm so smart, i can spell better than my friend

friends mom: yeah, well, he can speak french

girl: ouch, that was a total mom burn. i've been taking french lessons twice a week for two years and still can't speak french
by observatori March 26, 2007