Walden and Rose start dating on Two and a Half Men. "That's Not What They Call It in Amsterdam" is the fifth episode of the show's tenth season.
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Two and a Half Men Season 10 Episode 5 Quotes

Alan: Is that a leaf-blower?
Rose: That is not what they call it in Amsterdam.

I like you in that red dress, I fell like a bull and I just want to charge.

Alan