Charlie plays the piano while Alan sings some classic holiday songs and looks like embarrassing Evelyn in the process.
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Evelyn and Berta talk to legendary television producer Marty Pepper (guest star Carl Reiner).
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Alan helps show Charlie some dancing tips so he won't look like a fool at dancing class... and instead will at home.
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Charlie questions his entire manhood when he fails to give Chelsea an orgasm during sex. Poor guy.
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After Charlie sets a wedding date with Chelsea, he finds himself at a bar with Alan and soon in bed with him and a stranger.
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When Chelsea has back problems, Alan, as a chiropractor, helps Chelsea and goes so far as to suggest a boob reduction.
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A very upset Chelsea comes into Alan's room to complain. Alan just seems kind of scared.
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Charlie sits down with his fiancee, Chelsea, and her old college friend, Gail (Tricia Helfer), who's in town visiting.
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Two and a Half Men Quotes

Charlie: Oh, try MalibuPuddingGirls.com.
Alan: Pudding Girls?
Charlie: Trust me.
Alan: Oh ... ew.

Jake: Stuff never goes back in the box the way it came out.
Charlie: That's a life lesson, Jake