Youngest son fell asleep last night while watching Friends. It was the episode where Joey is in a WW1 movie and takes Chandler to see it and Chandler falls asleep. After the movie, in order to get Chandler to admit he fell asleep, Joey asked him what he thought about the scene with the kangaroos. Chandler does not admit he went to sleep, but replies that he was surprised to see kangaroos in a WW1 movie. Youngest son says his subconscious took it from there, saying "okay, World War 1, kangaroos, lets make it happen" resulting in a funny dream. He didn't elaborate further, but I'm sure it was hilarious.