I used to think that Barbie and ken were brother and sister, until i saw a commercial that showed ken and Barbie making out.
A childhood belief about toys

others believed things like this
- I used to believe when barbie kissed ken a kelly would come out— !!!!!!! loser!!!!!!!!!!!!!
- I used to believe that after I cut my barbie's hair, they will grow again. They've never grown :(— Duda
- I thought nipples disappeared at a certain age because Barbie never had them.Anon
- I use to blame the aliens on my missing barbie dolls.— Lindsay
- I used to believe that if i cut of my Barbie dolls hair that it would grow back.— Zena
- When I was little, I used to believe that my Barbie's would come to life while I was asleep to plot my death!— Kimbre