When i was little i was actually led to believe bottles of lemonade grew on trees. My neighbour pointed out a plant in his garden and over a period of atleast a year explained lemonade was growing there, till one day when he placed a bottle under the tree. To my delight i found the bottle and ran back to my mum screaming with delight that the lemonade tree had grown me a bottle of lemonade, To this day its the neighbourhood joke that is brought up every summer bbq :(
A childhood belief about drinks

others believed things like this
- I used to believe you could pour lemonade in a pan, put it in the oven and make lemonade cake.— wumpmugg
- I thought pink lemonade came from pink lemons.Anon
- I used to believe that broccoli grew on trees. It looks like a tree, so it made sense, right?— Catherine...
- that a piece of liver in your fridge if left overnight would wrap itself around a bottle of milkAnon
- I thought that elmers glue was made from milk, since it had that cow on the glue bottle. — Monty
- Drinking exactly 3 litres of sunny delight made you turn orange.Anon