Episode Quotes
Barney: (about Marshall revealing when the next slap will occur) Please, you took out all the suspense. In a horror movie, the killer does not grab a bullhorn and announce: "Attention unsupervised teens here at the lake house. At precisely 3 a.m. I'm gonna jump out of that closet right there and hack you all up with a machete. P.S. fire is my one weakness".
Episode References
The slap bet Ted explains in this episode took place in episode 2x09 "Slap Bet". This is also when Marshall used his first slap. The second slap happened in episode 2x16 "Stuff".
The web site called slapcountdown.com was created in episode 3x01 "Wait For It"