The desire to or act of destroying each and every one of The Jonas Brothers and/or their fans.
1 - This feeling is usually aquired by underground bands that could never get publicity like The Jon-Ass Brothers despite being more talented.
2 - It can also be aquired by someone that finds themself in a situation where they must talk to a Jonafied individual in a musical subject not concearning The Jonas Buttbuddies.
1 - Hey, Sean, I figured out why your band can't get famous!
Why?
Cuz everyone's too busy loving those butt buddies!
Who? Slipknot? (Yeah, I said it!)
No, The Jonas Brothers!
Ugh, but we can play circles around them! That makes me want to commit Jonacide...
2 - Hey, Tiffany, did you hear that the guy that shot John Lennon just got released on bail?
Genocide (mass-killing) of Jews. The term 'jewnocide' is used mainly when you are talking about how no one cares about genocides of Jews. For example, there was a jewnocide during World War II.
The following is an example of someone showing a serious lack of concern when a jewnocide is brought up in conversation. Try this on a friend. They will probably say the same thing.
You: Dude, when I get older I'm going to kill 5,000,000 Jews and 1 British clown.
Someone: Why are you going to kill a British clown?
You: SEE NO ONE CARES ABOUT THE JEWS!