Slapsgiving
"Slapsgiving" is the ninth episode in the third season of the television series How I Met Your Mother and 53rd overall. It originally aired on November 19, 2007.
Plot
The episode begins with Future Ted telling his kids about a private joke he and Robin used to share while they were going out where they would salute whenever another person used a word that sounded like a military rank before another word in a sentence (an example being 'Kernel (Colonel) Stuck In My Teeth'), but since breaking up they simply share awkward looks whenever someone does it. Future Ted also explains that they can no longer spend time alone together.
It is going to be the gang's first Thanksgiving with Marshall and Lily as a married couple. Lily is obsessing over making sure it is perfect, Robin has invited her older boyfriend Bob, who Ted perceives to be ancient, to Thanksgiving dinner, and Marshall is terrorizing Barney in the days leading up to Barney's third slap, and has even set up a countdown on his computer. When Robin and Ted are the only two members of the group to show up to a night of baking pies, they notice that they have nothing to talk about when they are together, creating a nagging feeling that they are no longer really friends.