I'll never wash my cheek 

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."

I'll never wash my cheek by The Professor July 11, 2004

I'll never wash my cheek 

a saying used when someone kisses you, meaning that you will never wash their spit off your jaw because it is PRECIOUS to you.

Johnny Depp kissed me...i'll never wash my cheek again!

I'll never wash my cheek by francesca papayano September 20, 2003

I'll never wash my cheek 

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.

I'll never wash my cheek by Shane September 22, 2003

I'll never wash my cheek 

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"

I'll never wash my cheek by D. Ferrel September 25, 2003

I'll never wash my cheek 

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)

I'll never wash my cheek by sicko the clown November 14, 2004

I'll never wash my cheek 

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!"

I'll never wash my cheek by Guess September 22, 2003