Mystic Soccer

Son and Husband are playing a soccer video game. Husband is winning but suddenly Son starts to score goals. 

Husband: Well done!

Son: It's karma. 

Husband: What is carnage?

Son: Karma is like revenge, but with ghosts. 

Husband: That's some good carnage. 

Wife: Not carnage, karma. 

Husband: (pauses) I'm still winning.