In an attempt to deliver a devastating final slap to Barney, Marshall explains how he mastered the Slap of A Million Exploding Suns.
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Episode Details: How I Met Your Mother Season 9 Episode 14
| Title | Slapsgiving 3: Slappointment in Slapmarra |
| Episode | 14 |
| Season | 9 |
| Release | January 13, 2014 |
| Overview | In an attempt to deliver a devastating final slap to Barney, Marshall explains how he mastered the Slap of A Million Exploding Suns. |
| Rating | 6.3 |
| Vote Count | 29 |
