Dunno actually, I'm gonna assume somewhere around the last two years of primary school. I don't remember ever being told or being traumatised by the fact so I'm assuming it was one of those things where you slowly figure something out, like the tooth fairy which tbh I still wish was real, I had a little book about castles made of teeth and it came with a tiny velvet pouch to put teeth in ![heart <3 <3](https://bluelight.org/xf/BL_Images/Orig_Emoji/24.gif)
![heart <3 <3](https://bluelight.org/xf/BL_Images/Orig_Emoji/24.gif)