I always used to spell cheese 'Cheeze' a-la Cheeze Whiz. I didn't find out I was spelling it incorrectly until I was about 20 and working at a grocery store.
A childhood belief about spelling

others believed things like this
- At the time I thought the moon was made of cheese and with oceans of cheese— 123
- I used to believe that grilled cheese was called 'girl cheese,' and only girls could eat it.— Paige
- I usde to believe that 'camembert cheese' was actually 'common bear cheese'.— Dan
- I thought brown paper grocery bags would fit more than plastic grocery bags.Anon
- I used to beleive that a catacism(spelling?) was an extremely painful Christian version of a bris.— Mike
- i used to spell eight "ate" cuz of the stuped: why was six afraid of seven, cuz seven ate(8) ten joke...— 8