Who said "War is what happens when people actually fight."?

This quote is attributed to Nelson Muntz.

War is what happens when people actually fight. - Nelson Muntz

"War is what happens when people actually fight."

Nelson Muntz War

"Ha-ha!"

"Your tears of unfathomable sadness!"

"I'm gonna enjoy this, Bart. I'm gonna enjoy this a lot."

"Eat my shorts, Simpson!"

"Some battles are worth fighting."

"Sometimes you have to become the monster to stop the monsters."

"Skynet sent me back through time to kill you."

"War teaches us the value of peace."