Watch How I Met Your Mother Season 6 Episode 15 online via TV Fanatic with over 6 options to watch the How I Met Your Mother S6E15 full episode. Affiliates with free and paid streaming include Amazon, iTunes, Vudu, YouTube Purchase, Google Play, and Amazon Prime.

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Episode Details

Katy Perry guest stars on this episode of How I Met Your Mother. The singer comes on board as a woman who gets Barney to open up.

Rating: 5.0 / 5.0 (70 Votes)
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How I Met Your Mother Season 6 Episode 15 Quotes

I'd say hump her brains out, but somebody obviously already has.


I just had a great TV audition, behind the KFC where the producer works on the weekends. Long story short, I'm going to be on LOST.