Watch How I Met Your Mother Season 6 Episode 16 online via TV Fanatic with over 7 options to watch the How I Met Your Mother S6E16 full episode. Affiliates with free and paid streaming include Amazon, iTunes, Vudu, YouTube Purchase, Google Play, Hulu Plus, and Verizon On Demand.
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Barney comes up with a name for February 13 on this episode: Desperation Day. While he honors lonely women, Marshall is shocked by Lily's gift for him.