cheese brain 

referring to one as a dumbass, stupid, or just plain retarded. comonly used in fights with siblings

Young Boy: "Stop it Tom! You're a cheese brain!"

Brother Of Young Boy: "Yeah, well, you're just a lard butt!"

cheese brain by Mary Gee October 15, 2008

swiss cheese brain 

When you smoke too much weed and you can't remember things as well anymore. Like you have holes in your memory.

Dude I totally forgot. I was so baked, Swiss cheese brain.

swiss cheese brain by Badbitch24 September 16, 2013

CheeseBrain 

What happens when you can't remember the most basic details of a recent event/interaction. The combination of the words Swiss Cheese and Brain, somewhere along the line Swiss got dropped.

Can be used in any manner you see fit as the situation requires.

Originally coined by Ben Brown of Ontario, Canada.

1.
Them: Do you remember the name of that movie we saw yesterday?
You: Movie? Dammit, cheesebrain strikes again.

2.
Them: Why do you use your palm pilot for everything?
You: Huh? Oh, I can't remember a damn thing, *shrug* cheesebrain.

CheeseBrain by mattsinf December 8, 2005