10. Ultimate Frisbee
First of all, the game referred to by hippies simply as “Ultimate” is already played in stadiums around the world and even highlighted on ESPN. So, to say that it should be added to the Olympic line-up isn’t even a stretch. Obviously, the players would probably need to figure a way to work their way around that pesky piss test if they wanted to keep their game intact. Everybody knows mostly stoners play ultimate frisbee.