When someone says the same thing you were thinking.
Ricky: That slime looks like a Ditto
Jesse: Brain couch. Get off of it.
It refers to a fart by someone who is a total gas bag who farts chronically every 5 minutes. It is advised to stay at a distance from the source at a 5 mile radius. The UN has recently outlawed the use of loaded beef as a weapon in war.
Come to Taco Bell for a Loaded Beef Burrito for only 89 cents!