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Adam Sandler stopped by the Late Show Wednesday night to promote his new flick, Jack and Jill, and told David Letterman how he got Katie Holmes, 32, to play his wife in the flick.

Sandler, 45, who is pals with Tom Cruise, 49, told Cruise the two could wife swap! Sandler recalls Cruise was a little weirded out by the situation, telling him, "This is weird that my wife is going to be your wife."

So, the actor made his friend feel comfortable: "It's a PG movie, no worries, nothing is going to happen In fact, anything I do with your wife in the movie, you can do with my wife," Sandler told Cruise.

Unfortunately for the funnyman, his wife was happy about the idea of doing "anything" with Tom Cruise! Sandler says, " ... every morning I'd go to the set and hear, 'Please do a love scene. Please slowly take your shirt off in that scene and rub her ever so tenderly.'"

Yowza!