Domentum 

Is the process in which you gain momentum in a sport or sport video game. This can contribute to losing a game you should have won.

The puck bounced of the referee and went in, stupid Domentum.

Domentum by darsky March 20, 2010

dementum 

momentum caused by dementia or perceived dementia.

Artie: You'd have to be crazy to vote for that candidate.
Verne: I know, he's terrible... but for some reason, he's got a lot of dementum.

dementum by sippymccloy August 2, 2007