Reading a misheard lyric from "You're The One That I Want" on this site, I was reminded of how I misheard the song when I first saw the clip from "Grease" aged 6.
I thought it was called "You're The Wuther The Wuh" ("You are the wuh-the-wuh, ooh-ooh-ooh, honey" etc).
A childhood belief about misheard lyrics

others believed things like this
- A common misheard lyric in BMTH’s ‘Shadow Moses’ is “THIS IS SANDPIT TURTLE!”— Oli
- When I first heard Stawberry Fields Forever, I misheard the lyrics as Strawberry Fields For Trevor.— Matt
- In 'Call Me Maybe', I misheard 'Ripped jeans skin' as 'Rich cheese skin'. — Carly Rae Cheddar
- I used to believe waffles were honey combs and thats why you would pour honey on it — Gaby
- I always thought that "elbow grease" was a type of lubricant until about 2 years ago. I'm 19.— Erika
- I used to believe clip on bow ties were inserted into your throat and that is how they stayed in placeAnon