Top Definition
A defensive action which doesn't admit or deny. Usually shouted in response to an accusation that is most likely true.
Upset co-worker to you:"Mike told me you took my sandwich out of my lunch bag."
You: "That's Bullshit!"

You to Mike: "You ratted me out about the sandwich!"
Mike: "That's Bullshit!"
by lizybee February 18, 2010

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