look up any word, like sex:
 
1.
What eric lindros gets every time he steps onto the ice.
Commentator1: and another big hit by stevens...slamming lindros to the ice....

Commentator2: all of his brain cells have just left the building.
by ArchDevil July 26, 2004
 
2.
oral sex done to a man that was very pleasing;when eyes roll in back of head
"A I just a concussion"
by ya boi swingem October 11, 2003
 
3.
A White boy camethis up!it means a BLOW TO THE Head,but domish like!
Man she can run and give me a concussion,AT THE SAME TIME!!!
by Travis Fountain May 07, 2003
 
4.
1.Mary's "crack up word"

2.To Mary: the worlds funniest word
ex.to stare Mary in the eyes and say CONCUSSION
by anonymous November 05, 2004