Top Definition
When an elderly man has an orgasam but only a puff of dust comes out. Usually resulting in but not guaranteed puff noise.
John, "Grandpa, is the viagra working out?"

Henry, "Its working great but all I'm getting is nitpuffs."

John, "I'm sorry to hear that."
by Penguin Strut March 14, 2009
5 Words related to nitpuff

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