I used to believe that TLC just stood for The Learning Channel (we have a satellite), and not also for tender loving care.
A childhood belief about spelling

others believed things like this
- I used to think that satellites were launched from satellite dishes.— Mike
- When I was a kid I thought that the newsreaders on satellite TV lived in the satellites.— Mat
- I spent ages wondering what a bart ender was as a child without realising that it was actually bar tender.— Heather
- I thought Aerosmith's 'Love in an Elevator' was 'Loving a man like Victor'.— Tracy Miller
- i used to believe (because my dad told me so) that AM stood for "awful music" and FM stood for "fine music"— skydvgrl
- I swear I heard a Disney Channel/Radio Disney song where the chorus was a repeated “Damn it”— SpengBab