As a kid I used to love 'Sweetbreads'. It wasn't until I was in my twenties that I found out they were actually Lambs Testicles!!!
A childhood belief about nasty food

others believed things like this
- We had a male cat that wasn't neutered. I thought his testicles were just the cat version of a butt.— Robyn
- I didn't mind eating lambs brains when I was a kid because I thought it would make me smart.Anon
- I always hear Manic Street Preachers 'You Love Us' as 'You Love Arse'.— Lou
- I used to think that if you ate cat food you would die. I found out it wasn't true
— Bob#4 - I used to think pee was in your testicles.— R.G.
- THat Cheesecake was actually made of cheese. I was 18 when I found out it wasn't!— R