The name of the game is "The Samoan Slap Game", a viral Youtube trend played by Samoan youth, with the main objective to "not to get mad or laugh" and have some fun. The Youtube trend started in 2008 until 2011, either within the homelands of Samoa, or in Samoan community in Auckland New Zealand, and was popular enough that pacific communities in five surrounding nations joined in and began making their own slap videos.
How to play Samoan Slap Game
All players start with a gulp of water inside their mouth about half a mouth full. The players then face each other and take about 30 seconds to a minute to get their slapping game on focus.
During the short focus period of starring at the opponent, one can make funny faces to make the other lose immediately, but might end up laughing themselves. Ugliest person is supposed to start the slapping first, or just start when the video-cam person says to begin. Next comes the slapping fun. Slapping combinations can be apart of the game. If you can come up with a combo play of slaps in a series, then you're more likely to make the other player laugh, or trigger his Samoan side to be more competitive. The game is funny to Samoans because slapping in the face is usually a fast trigger to a fight, but in this game, you'll lose, if you lose your cool. No punching - No tickling.
The viewers can not make the players laugh. Once the player opens their mouth and spits water from laughing or becoming mad, they're out. Most of the time it's played between 2 players but 3 is better. First player to get up to 2 wins, wins the game. This game started around 2011. [Samoan Slap Game video1]
"This is probably a great thing for sports kids to play around with, because in American style Football and Rugby, if you can't keep your cool during the game, which can be very physically intense, then you're not going to get very far"
The Samoan Mega-slap Game
There is another Samoan slap game that became viral in 2008, popular name being called "Samoa Mega-slap", and is NOT to be confused with the other friendly slap game. The Samoan Mega-slap is when a person surprises a target with a huge "Mega-slap", and posts the reaction online.
Sometimes the Mega-slap target is playing games, or sleeping, or doing work, or playing on the internet. The point is to get the Mega-slap on video so people can have a laugh. There's a larger chance of someone getting really really mad in this game, but the game keeps going when the target gets 'revenge', posting the revenge slap online. It's strongly recommended that this Samoa Mega-slap game be played with people that know and love the other players, otherwise it could be taken the wrong way and could lead to other big problems. [Samoan Mega-slap video 1, video 2]
The Slap-Fight Championship - Youtube Channel
After some videos went viral in 2008-2011, someone took the playful 'kids game' to a strange and violent new level and began a Slap-Fight Championship, which to many people seems a bit extreme, but it's Youtube. The Slap-Fight Championship still seems to be going on in 2020. A young Hawaiian man is said to be a major player and continues to take on some serious heat from competitors, while giving more heat back. His Slap-Fight nickname is "Da Crazy Hawaiian" and recently known as "The Sleeper". [Slap-Fight Championship video1, video2]