| "Slap Bet" | |
|---|---|
| How I Met Your Mother episode | |
| Episode no. | Season 2 Episode 9 |
| Directed by | Pamela Fryman |
| Written by | Kourtney Kang |
| Production code | 2ALH09 |
| Original air date | November 20, 2006 |
| Guest appearances | |
| |
"Slap Bet" is the ninth episode of the second season of the American sitcom How I Met Your Mother. The episode, originally titled "Robin Sparkles", first aired on November 20, 2006 on CBS; the title was changed in order to keep the episode's ending a secret. The episode received highly positive reviews and features in several lists of the best How I Met Your Mother episodes. The episode led to two recurring jokes and storylines in the show: "Robin Sparkles", Robin's teenage pop star career, and the Slap Bet, in which Marshall slaps Barney at various points throughout the series.