My dad is a huge AC/DC fan, so I grew up listening to them...a lot. Now, Dirty Deeds is one his all time favorite songs, and I used to think that they said, "Dirty jeans and a thunder jeep," instead of, "Dirty deeds and they're done dirt cheap." And I can still listen to that song and hear my version of it. Try it sometime. It's funny.
A childhood belief about misheard lyrics

others believed things like this
- a friend thought that the song "dirty deeds done dirt cheap" was saying "dirty deeds dunderchief"— dubs
- when i was younger i thought ac/dc's dirty deeds (done dirt cheap), was dirty knees and the thunder cheeks.— S
- I used to believe that toilets would open and swallow you up because they got dirty!!— swallowing toilet
- i used to believe that the "coin wash" was to clean my dirty pennies.— rmutt
- When I was little, I thought that Water Towers were full of dirty laundry. Why? I dont know.Anon
- I used to think that trolls lived in my shower drain and showered with my dirty water— Troll bather