My cousin once got some Super-man pajamas, complete with red cape, as a child...
He suddenly thought he really was Superman, and climbed out his 2nd-story window onto the porch and jumped off, thinking he could fly.
If his dad hadn't been walking up to the porch at that moment and caught him, he'd would have found out he couldn't fly the hard way.
A childhood belief about special powers

others believed things like this
- I used to believe that I could fly like Superman if I had the right cape and got a good running start. — Rick
- I believed that Reindeer loved popcorn, and so I would cook a bag and scatter it on the porch.— Popcornsanta
- I used to dig a super deep hole thinking it
would transport me to the galaxy — Rafaella - As a child I used think if I jumped too high on a trampoline I'd be sucked up into outer space.— Jenn
- I used to believe that the Super intendant was the Super Nintendo.— Lecia
- I can remember thinking that is I hid my eyes, and couldn't see anybody that they couldn't see me.Anon