When I was younger, I thought that the jingle for the Chevy commercials was "lagger up". I now know that they were saying "like a rock".
A childhood belief about adverts

others believed things like this
- When I was younger I thought that if I ate Gusher's, my head would turn into fruit, like in the commercialsAnon
- My friends and I used to believe that if you planted a rock, it would grow a rock tree. Anon
- I used to believe the the Elton John song, "Crocodile Rock" was about a Crocodile, named Rock.Anon
- My mum used to tell me when the ice-cream truck turned on his jingle, it meant they had run out of ice-cream!Anon
- When I was around seven years-old, my friend and I put a rock in a microwave and thought it would melt.— Lars
- I thought Rock and Roll were 2 musicians, with one who rocked and one who rolled.Anon