When a snitch (A person who has ""tattled" on another person) rats out someone in return that someone rats out them for something else resulting in a repeatment of person 1 to 2 rating each other out until someone runs out of things to tattle about.
Usually happens among kids in presents of an adult; specifically between siblings.

usually lasts a hour
ann: If you dont give me the keys ill start Rat hour!
jim: fine i'll tell mom you went to the store when she did not allow you!
ann: and then i'll tell mom you did not clean your room
jim:then ill tell.......
eventually adult gets involved

this is called "rat hour"
by aunt jemima123abc September 03, 2013

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