Main Events lead to others
When Dave told Lynsey that if she had to shut up for 5 minutes the top of her head would explode like a volcano and that event led to them doing the contest of No Talking boys vs. girls. They made up rules like you can only say three words to a teacher or the principal but they couldn't say three words to a parent. If it wasn't for Dave there would be no contest. Another one is when Dave wrote on a piece of paper that they were doing a contest in school about No Talking and that led Dave's mom to think that Dave thought that his mom couldn't be quiet.