Answer:
What flies without wings?
I am used when you jump off a bridge for fun.
*forward* *backwards*is what I do all day. I come in all different shapes and sizes. I can be scary and I can calm you down.
kings and queens may cling to power and the jesters may have their call. I am the most common but I can rule them all.
I'm not alive but I grow I don't have lungs but I need air I don't have a mouth but water can kill me. What am I?
What do you purposefully put lots of in and on your body, but run away from when you encounter it outside?