When Barney (Neil Patrick Harris) and Abby (guest star Britney Spears) realize that they have one thing in common -- their mutual hatred of Ted (Josh Radnor) -- the "couple" decides to go to the bar to flaunt their new relationship in Ted's face, on HOW I MET YOUR MOTHER, Monday, May 12 (8:30-9:00 PM, ET/PT) on the CBS Television Network. Photo: Cliff Lipson/CBS ©2008 CBS Broadcasting Inc. All Rights Reserved.

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