Every Friday, from midnight to 2am, Luz de Gas is hosting #PingPongFriday, a trend that's flown in from NYC to BCN. If you're the type who likes going out but not necessarily up to much on the dance floor, for a couple of hours you can play ping pong instead, along with the club's music and a few drinks. You can also face down the 'great Mister X', a mysterious table tennis player who will take on any challengers. If you beat him, you could take home a bottle of GHMUMM champagne. And if you lose, you can always just play with your friends.