Watch How I Met Your Mother Season 3 Episode 12 online via TV Fanatic with over 7 options to watch the How I Met Your Mother S3E12 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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Ted and Barney hit the town to celebrate St. Patrick's Day where Ted seemingly is rewarded for every bad behavior. Meanwhile, Lily and Marshall discover their apartment has even more problems... the floor is slanted.