8. The Final Slap
The slap bet isn't over. Marshall still has two final slaps to dole out to Barney before the series ends. Kids, you remember the slap bet. Back in Season 2, Marshall and Barney made a bet over Robin and whether or not she was in porn. Believing he won, Barney slapped Marshall, but it turned out that Robin was actually a Canadian pop star. As slap bet commissioner, Lily ruled that Marshall could slap Barney 10 times in a row or 5 times spread out over eternity. Barney foolishly chose the latter, and Marshall has been tormenting him ever since. When we got to the last slap in Season 7, however, Barney made a new deal with Marshall. Marshall let Barney get rid of the ducky tie (another inside joke) if Marshall could slap him three more times. With two left, we know that at least one slap is coming January 14 thanks to
www.theslapbetcountdown.com. My guess is that this episode will have a flashforward to Thanksgiving, or Slapsgiving if you want to be cool about it.