I thought you could get toffee from mixing tea and coffee.
A childhood belief about sweeties

others believed things like this
- that when I growed up I would be a footballer but that was obviously rubbish as I can't play for toffee— Darren
- until 12 yo i thought buying and drinking coffee was illegal when you were under 18:) — smarty
- I always refused to eat coffeecake because I thought it was made with coffee grounds. Anon
- I always thought there was a drinking age for coffee, because it was an adult drink like beer and wine.Anon
- I actually asked my mother if mixing girls' poop and boys' poop would cause an explosion.— kraine
- I used to believe that coffee was tea with milk in it.Anon