When I was about 5 or 6 years old, I used to think Terrence Trent D'arby's lyrics were "..lemonade accross my heart," instead of "..sign your name across my heart".
A childhood belief about misheard lyrics

others believed things like this
- The song called heart of glass mixed me up as a kid. I heard "Heart and ass". — oops
- I used to think that when people had heart attacks someone came and stabbed their heartAnon
- I used to think that if you eat pig heart, you could grow another heart and be twice as healthier. Anon
- I used to believe you could pour lemonade in a pan, put it in the oven and make lemonade cake.— wumpmugg
- I used to believe an artichoke was an animal and we only ate its heart. — Laura
- I used to believe that only people that were in love had a heart.— Nikki