When my younger sister was really small (maybe 5), she got in the habit of calling me a 'stupid fuck'. One time, she said that to me and my mom walked in. My mom wasn't exactly happy hearing my sister say that, and to avoid her own embarrassment, she made me tell my sister what 'fuck' meant. Apparently my sister just thought it was another term for a person, but not a 'bad' word. That was the last time she's ever called me that.
A childhood belief about speaking

others believed things like this
- When my sister's father went to Seattle, my sister said "Is Attle nice?" She thought Attle was a person's name— zzo38
- My sister's friend thought cats were just small dogs when she was younger.— Richard Davies
- I believed alligators lived in toilets, and one apparently got hold of my sister.Anon
- My sister thought (not more than one year ago, she is now 14) that John Doe was an actual person.— Brother to Natascha
- my sister and i used to think sideburns were called "hash browns."— ginny
- My 6 years younger sister used to tell me that I was younger than her. She was just growing backwards.— Taryn