Everyone Acts Five Years Old?

Jon walked downstairs, with the petticoats from the dress swishing across his legs. It felt wonderful. In the living room, there were a bunch of people he knew from school. There were his friends Karyn, Tim, and Pete, and also Zach Jones and Leonard Drullers. And all of them were dressed just like Jon. As soon as everyone saw him, they all yelled "Happy Birthday!" All the teenagers dressed as little girls came up and hugged him. It was so weird to see them all dressed that way, but at the same time, Jon liked it. For the next few hours they played party games (and even though they were obviously teenagers, they acted like 5-year old girls), until it was time for cake and presents.