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A warning given to a person at fifteen minutes, then five minutes, before you are due to do a task or go out.
Her: "We're going round my mum's soon".

Him: "Can you give me a fifteen and five?"

Her: "It's time to go out and you're not ready!"

Him: "You didn't give me a fifteen and five!"

Boss: "We've got a meeting later. Don't worry - I'll give you a fifteen and five."
by The WeirdnessSymposium April 19, 2009
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