I used to call poinsettias "pinseltoe" because I could never remember the correct word. And "pinseltoe" sounds like "mistletoe", so that helped at Christmas!
A childhood belief about plants

others believed things like this
- "Christmas time
mistletoe and brine..."— Santa Puncher - When my dad was little he thought that mistletoe was some kind of aircraft.— xoxo
- i used to think that the word 'clothes' was the plural for 'clo.' so i'd call a sock or a shirt a clo. — jessimocha
- My niece used to call Marmite Falloy! Where she got the word Falloy from nobody knows— Russ
- I was told that for every christmas carol i sang before christmas time santa would give me one less present!— K
- i used to believe the turning signals on cars helped them turn sharp corners.— Julia