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How I Met Your Mother

Episode Name: Slapsgiving 3: Slappointment in Slapmarra
Episode Overview: In an attempt to deliver a devastating final slap to Barney, Marshall explains how he mastered the Slap of A Million Exploding Suns.
Episode Number: 14
Episode Season: 9
Episode First Aired: 2014-01-13
Rating: 7.2