Walden says the title of this episode.
Finland: September 20, 2012 on Sub
Slovakia: December 3, 2012 on Markiza
This episode's end titles has Chuck Lorre's Vanity Card #369.
When kissing Zoey on his deck, Walden says "Nudge nudge, wink wink, say no more," in a bad British accent, borrowing from the 'Nudge Nudge' sketch in the Monty Python's Flying Circus episode "How to Recognise Different Types of Trees From Quite a Long Way Away" where in a bar Eric Idle plays a seeming lothario who sits next to a complete stranger played by Terry Jones and talks all manner of suggestive innuendo, followed by that and similar phrasing meant to further imply the obvious sexual connotation.