Once when I was little I was watching Blue's Clues, and there was a green dog on that show named Green Puppy. I didn't know what his name was, so I asked my grandpa, and he told me his name was Spike. I believed him until I was about 15 when I finally looked it up for sure. I always thought it'd be weird that the green dog would be named Spike when the blue dog was named Blue and the magenta dog was named Magenta. Oh well, lesson learned: don't listen to grandpa!
A childhood belief about tv shows

others believed things like this
- Eifel 65 - Blue
I'm Blue (if I was green I would die...)
[I'm blue, da ba dee, da ba di.]— Matt - I used to believe the sky was green and everybody was colorblind since they said it was blue— IM COW
- i used to believe that people with blue or green eyes saw that certain color— mellactica
- that the green traffic light turned blue when it was off— Kriket Evens
- I used to believe that if you mixed red, blue, green, and yellow paint you'd get plaid!— Judith Ann
- My grandpa told me that edible part of the watermelon was blue until you cut them open. Anon