Re: How I Met Your Mother: Barney and... (Spoilers ahead...)
Guy Gardener wrote:
But if he's trying to get past Marshall, that would be a purposeful and functional slap and not a slap bet slap, which means Barney can slap back.
The slaps are unconditional if i recall correctly.. Marshall can deal them out anytime for whatever reason and even if he just felt like it.
So the last one might even do some good
"But that emergency was supposed to be the fall of an Avenger!" Phil Coulson
"Exactly!" Nick Fury