A childhood belief about general

When I was first learning to brush my own teeth, my mum would always remind me "don't forget to brush your back teeth". No one had ever explained to me what "back teeth" meant, so for years I used to gag myself trying to find the teeth at the back of my mouth.

Of course, i never found any teeth in my throat, but was too scared to ask mum about it because I thought I'd be told off for not having brushed them in years. I was about 8 when a dentist visited my school and I plucked up the courage to ask her about it. I felt a bit stupid, but at least it stopped me pushing toothbrushes down my throat...