body functions: special powers

I used to be sure I could fly, and even experienced it a couple of times. In public it was a kind of glide with my feet stationary a couple of inches above the floor.
In private I'm sure it was as someone else mentioned more like swimming. In fact I'm pretty sure I had to hold my breath to do it.

Every birthday, from the age of 4 until I was 8, when I blew out the candles on my birthday cake I would wish that I was "bionic". The next morning, when I woke up, I would be really excited about my new bionic powers and rush outside to test them by lifting the (suitably heavy) family car... It turns out that I hadn't become bionic after all.

At school there used to be this stuff which was like blu-tack but pink and they came in little square 'tablets'; I think they were called 'Pritt Buddies' and you used them for putting up posters etc. However, my mates brother told us that they were strength pills. To demonstrate he threw a stone 'as far as he could'. Then he chewed a 'strength pill' and... wow! that went MUCH FURTHER. We started chewing pritt buddy and throwing stones, balls etc all over the place until one of the teachers caught us and sent us to the headmistress...

I thought I could fly. No - really.