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When a discussion/debate turns into a fight, you stop for a moment and flash a friendly smile at the other person to lighten up the things a bit. Non-military version of 'ceasefire' with the word 'cheese' used to denote a smile.
Jenny: Enough of this bullshit. Now you know why I don't talk with you very often.
Rob: cheesefire (Flashes a smile)
by Ye110wJacket October 11, 2012
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