The Sex and the City actor attended the annual benefit for the Big Apple's MCC Theater on Monday night (01Mar10) and put a walk-on role in his hit show under the hammer.
But after bidders failed to show much interest in the lot, Noth offered to strip in the scene.
He told the crowd, "We'll make it a nude scene. I'll take off my shirt. And I'll give the winner lots of kisses - and a good tickle."
The racy new package boosted bids - pulling in $6,000 (£4,000) from New Yorker Marianne Mills.