Is usually used following an unexpected display of affection (typically a kiss) from a person whom one has a crush on.

While I am unsure of the exact etymology of the phrase, I can remember first hearing it on an old Brady Bunch episode when Marcia Brady said it after Davy Jones from the Monkees kissed her on the cheek.
"I can't believe Davy Jones kissed me! I'll never wash this cheek again."
by The Professor July 12, 2004
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a saying used when someone kisses you, meaning that you will never wash their spit off your jaw because it is PRECIOUS to you.
by francesca papayano September 21, 2003
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to not clean a portion of one's face with soap and water.
"I'll never wash my cheek" I said, after being kissed by a girl I have a crush one.
by Shane September 23, 2003
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The pact taken after you burn your ass on the asphalt in a roller skating accident. Can't wash it cause it will burn too much.
"Shit hurts fool....I'll never wash my cheek"
by D. Ferrel September 25, 2003
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yeah Marci Brady did say that.....but i always imagined she meant she got kissed on one of her lovely asscheeks (wink wink)
I'll never was my cheek again (Sez Marcia Marcia Marcia Brady)
by sicko the clown November 14, 2004
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What you do when a cute boy kisses it it.
"When that boy who looked like a dreamy mix of Vanilla Ice and James Brown kissed me, I screamed, 'I'll never wash my cheek!"
by Guess September 22, 2003
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