Can I Join? / What Mess?

S1, E103: Harry is disappointed to find that he is not able to join in with any of the activities his family are taking part in at home, so he decides to go to Dino-World to invent his own clubs, which only himself and the dinosaurs can join - i.e. Bungee jumping, messy cooking.../ When Harry is told to tidy his room he simply transfers all the mess into Dino-World, where he is told there is a 'no tidying up rule'. This results in chaos in Dino-World and Pterence ends up getting lost in all the rubbish causing Harry to tidy Dino-World - and his bedroom.