Brotherly insults

The boys have this new game where one of them will angrily shout the name of the other. “Kadin!” Rees will say harshly. When Kadin looks up, Rees will quickly change tack and say in a gentle, goofy voice, “You’re silly.” Kadin will laugh, enjoy the adrenaline rush, and they’ll do it all over again. Sometimes the response is “nice shoes” or some other such silly non-sequitor. Why is this fun? Is it the tension and release that they like?

Needless to say, I don’t enjoy this game so much. Bad feng shui.

They have another, similarly passive aggressive type game where they take turns reciting dialog from movies. It is usually sort of sarcastic, harsh, but funny dialog. One dialog, said in a irritated, reluctant tone, goes:
"Thank you!"
"You're welcome!"
"Don't mention it!"
"I won't!"
"Bye to you!"
"Same to you!"
We have heard that about 586 times.

Another example is the JibJab version of "This Land is Your Land" where Bush and Kerry exchange insults. The boys loved reenacting that.

Is it some sort of sibling thing? Oh joy!