Me: I'm not going to think about it.
Brain: *thinks about it* 
Me: I said I'm not going to think about it.
Brain: *thinks harder about it* *plotting* *growing more angry*
Me: Hey! Stop.
Brain: NO! 
Me: YES.
Brain: NO. I don't like it therefore I will think about it until it's better!
Me: Just....forget about it okay? Let's focus our energy somewhere more useful. 
Brain: *huffs*
Me: Come on.
Brain: ….fine.