HBO started doing this cool thing where they do little shorts which people behind the HBO shows tell stories and then they animate a cute little video to go with it.

Recently, GoT co-creator and showrunner David Benioff told a story of the time he learned to not challenge beefy dreamboat Jason Momoa to “the slap game.”

Everyone had lots of beers but Benioff had some pretty red hands after, he didn’t think much of it though until the next morning his hands were swollen up “like catcher’s mitts” and he had to go to the hospital!

So lesson learned, maybe don’t face off against the beefiest man in Hollywood to a physical challenge.

Source: Buzzfeed