A montage of Barney singing songs about Ted's hot sister using various holiday songs as the music. Very funny and we can't wait for the episode!
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Barney and Ted, who both decided to use The Naked Man on their respective dates, compare which pose they'll use when appearing naked for their dates.
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Barney explains the Cheerleader Effect using a collection of women at the bar. One of which looks strikingly a lot like Marshall. Oh and Barney finds out he might be a father.
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HIMYM Quotes

Barney: Ladies and gentlemen, I have in my hand a copy of tonight's Top Ten list. The category: top ten things I would've called my truck...
Ted: It was never your truck.
Barney: if Ted hadn't been a jerk and given it back.
Ted: It was a rental.
Barney: Number ten, "The Winne-Bango." Number nine, "The Pick-Up Truck." Number eight, "The Ford Explore Her." Number seven, "The You Scream Truck." You Scream. (they all laugh) Number six, "Feels on Wheels!" Hello! Number five, "The Ride Her Truck." Number four, "The 18-Squeeler." Number three, "The Esca-Laid." Number two, "The Slam-Boney." and... the number one thing I would've called my truck if Ted hadn't been a jerk and given it back... "The '69 Chevy."

Sometimes things have to fall apart to make way for better things...we're done here.

Ted