I used to watch the Archie Cartoon Variety Hour or something like that and it showed cartoon Archie characters on stage in front of a live audience of real children.
I begged my mom to try to get me tickets to that show. She'd just smile, and never told me it was impossible.
A childhood belief about cartoons

others believed things like this
- I thought cartoons were real, I remember asking my mom why there were lines around the "actors" in a cartoon.— Steven Graziano
- I loved watching the cartoon Casper the Friendly Ghost and wondered why the Holy Ghost never got his own show.— Robert
- I had alligators and cartoon lions under my bed.— ruth
- Before the invention of the camera, everything looked like a cartoon with the quality/effect of oil painting.— MD Caruso
- i used to picture jesus as a kind of cartoon Tarzan, swinging through the trees...— bex
- i used to believe dragon ball z was real
and namek was in another dimension
and every show on tv was realAnon