When my sister and I were little, we would get bored on family vacations, so one day we invented our own imaginary trailer full of imaginary pets. We had around 30 animals in it: horses, dogs, rabbits, everything. The chicks would always get loose in my grandmother's basement, so we'd spend a good 10 minutes rounding them up again (and hurting ourselves in the process). Then, anytime we left someplace, we'd always have to check the back of the car to make sure the trailer was hooked up, and we'd always freak out on mountains, thinking the trailer would come loose and roll all the way down the hill.
A childhood belief about imaginary friends

others believed things like this
- I believed that the ladder on the back of a trailer/rv led up to a swimming pool.— marilese
- I was always afraid of trailer parks because I though that is where tornados came from.— Evan
- I used to have an imaginary friend named Mr. Nobody. He would protect me from my imaginary enemy, Bad Elmer.— Kdees
- I thought the song "Little Deuce Coupe" was "Little Loose Tooth".Anon
- When I was about 6 or 7, I had an imaginary friend, who left for ice-cream one night. He never returned.— His name was Jimmy
- My little sister's imaginary friend was Kit the talking car from that show Knight Rider.Anon