Lily and Robin are totally BFFs during the best night ever. Someone needs to remind Robin of this.
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Lily and Marshall try to push the margaritas during the best night ever while Barney just heads straight for the tequila.
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During the best night ever, all poor Marshall wanted was for Robin and Barney to try the Gouda without much luck.
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Ted is busy teaching Barney in his class, "Robin 101," when Robin herself enters the classroom and the two boys are very shocked.
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The Barman and Robin are struggling a bit when Barney is not being a sensitive enough of a boyfriend, so he eventually enlists in Ted's class for help.
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Ted offers Barney help with his relationship with Robin in the form of a class cleverly entitled "Robin 101."
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Barney is right at home here. He and Marshall hang out in a strip club on the episode "Double Date."
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Oh yes, How I Met Your Mother fans. Robin and Barney really are naked on bed together.
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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