Watch this video of six guys playing a drinking game where they light their hair on fire. They call themselves the "Hooray Henrys" and they're at a wedding in Scotland.
It starts with them standing around a circular table that has glasses of water and shots of Sambuca, which is a liqueur and flammable.
Here's the game: You pour Sambuca on your hair, light it on fire, and then do a shot. And THEN you lean over and pass the fire from your hair to the hair of the idiot next to you.
Once you've accomplished that, you get to grab a glass of water and douse your own flames.
Dumb, dumb, dumb.