Watch How I Met Your Mother Season 9 Episode 14 online via TV Fanatic with over 5 options to watch the How I Met Your Mother S9E14 full episode. Affiliates with free and paid streaming include Amazon, iTunes, Vudu, YouTube Purchase, and Google Play.
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Marshall explains how he pulled off the Slap of a Million Suns as he plans his final slap against Barney on How I Met Your Mother.