Okay, headcanon
Mondler buys a Wii for the twins when they're young and theres the usual bickering over who is player one, who's turn it is to choose a game, if its co op or single player.
Cause they're small, they get stuck with their tiny 6-8 year old brains and need help. This is where Chandler comes into things past just his wallet. He helps those kids beat those levels in The Simpsons game, Dawn of The Dragon etc
Things are just fine until Christmas day, 2010. Ross is there because the Gellers decide to share christmas as a family. Its a whole thing. Even Ben is there.
The twins and Emma are taking turns on Just Dance. And then Ross and Monica go from reminiscing about playing as kids to arguing over who has the better coordination.
The "adults" take over. Wii sport is brought out. Monica breaks the TV. A remote gets thrown.
After that Monica and Ross are banned from the kids play room. Chandler calls it "time out"
