Well, For some reason I started to wonder why little children tend to shove things up their noses or into their ears. I never did it but my little sister did it all the time.

Thoughts on what causes this?

she didn't shove thing up her nose/into her ears exclusively, if you know what i mean.

also, curiosity. before you know that certain things are gross, you want to try and smell, taste, feel and possibly hear it. kids haven't really worked out these functions yet.

i'm speaking out of my ass here, but i bet it's the truth. sounds logical enough.