I've written before about the best comedy on network TV (that'd be How I Met Your Mother for those who have forgotten) and have explained the Slap Bet. But in case you're forgotten, here are some video links:
Here's a video primer from the first episode: The Slap Bet
And here is Barney's reaction to the mind games Marshall has played on him: Slapsgiving
And I just ran across the "music video" to the song Marshall sang in celebration for slapping Barney at Slapsgiving: You Just Got Slapped
Legen--wait for it-- dary.
