Girl Lets Her Blonde Friend Slap Her In The Face Every Day For A Pretty Painful Shot At A Viral Video

I don’t have a lot of context for this video and I’m not sure what’s going on.  All I know is this brunette:

Is letting this blonde:

Slap her in the face very hard, a lot of times, on a lot of days, all for a video.

I’d assume they’re just trying to go viral and the dark haired one drew the short straw?

Or maybe we’re looking at a HIMYM Slap Bet situation?

Yeah, I used to watch How I Met Your Mother.  So?  It was a great show.  It deftly explored the theme of the optimism of inevitability structured around a philosophy that is fundamentally, however your life goes, that’s the story of how you ended up where you are, and therefore, every turn your story took, whether sad or happy at the time, is part of how you achieved whatever joy you have.

But I digress.  These very attractive women are slapping each other, and while I’ve never been slapped because I respect people so much they would never have a reason to hit me, I would imagine it is pretty painful.  Would love to know the context here.