How I Met Your Mother: Season 3 Episode 9: Slapsgiving
Starring: Josh Radnor, Jason Segel, Cobie Smulders, Neil Patrick Harris, Alyson Hannigan, Eben Ham, Lyndsy Fonseca
Length: 22 minutes
How I Met Your Mother: S03E09 Description: Marshall warns Barney that the third slap in their “slap bet” will be coming on Thanksgiving night. Meanwhile, Ted and Robin sleep together on the night before Thanksgiving.