A friend when I was younger told me that milk came from cows, but apple juice came from horses. She'd seen it with her own eyes!
A childhood belief about drinks

others believed things like this
- I used to believe that milk came from cows, so water came from horses. hahah— Melissa O'Connor
- When I was little I thought cows married horses, cows were all female and horses were all male. — Sheila
- I used to believe chocolate milk came from brown cows and regular milk came from black and white cowsAnon
- i used to think chocolate milk came from brown cows and normal milk came from white cows Anon
- I used to believe that brown cows made chocolate milk and white cows made regular milk.— andrew mient
- I used to think that apple juice was beer and I'd drink it all the time and pretend to be drunk.— Dee