I used to think that because on the Trix cereal commercials they said "Silly rabbit, Trix are for kids!" that my parents would get in trouble if they ever are them.
A childhood belief about sweeties

others believed things like this
- I used to believe that if you weren't good, the Trix Rabbit would steal your yogurt.— Kyle
- I used to belive that my pet rabbit was the easter rabbit and he owned egg land.— Andrew B
- I used to think that when you poured milk into your cereal, the cereal multiplied.— Allen
- When I was a kid I believed that if I ate cereal I would be a cereal killer.Anon
- I used to think that serial killers were "cereal killers" and would kill you by poisoning you cereal.— Jello
- I thought that "Doube Bubble Toil and Trouble" was "Doube Bubble, Toilet Trouble" Anon