Children

I just had a conversation with my brother and his friend. It went something like this:

Brother: Sis it's not listening to me
Me: -rushes over- What's not listening to you?
Brother: My head isn't listenin-
Friend: -giggling- NO NO! OUR SOCKS!
Brother: -also giggling- Ya, our socks aren't listening to us.
Friend: Ya my sock won't listen
Me: Ok... so what do you want me to do about this?
-Mild silence-
Brother: I want to punch my sock
Friend: -punching his right foot- Ya I want to punch my sock too
Me: Ok then you guys go punch your socks.
-They punch their feet as I leave laughing wildly-

Sometimes I wonder what goes on in their heads. I don't recall being extremely strange when I was their age (Five-years-old), and I do remember being that age. The strangest thing I ever did was play pretend with my parents (I was the teacher and they were my students)... which isn't really that strange.

My dear brother also thought it would be pretty funny to tell me that his bum was on fire the other day. He waltzed into my room and shouted -between laughing hysterically- about how there was fire on his bum. Apparently it was the greatest joke of the century, but sadly I did not understand the humour.

There seems to be something incredibly funny about using "bad words" and insults as well. In their case "stupid poopy head" is a terribly brilliant insult. I understand this, after all if anyone dares call me a stupid poopy head, I wouldn't be very happy (despite my initial laughter of course).

For some reason I don't recall being so giddy about these "bad words" and odd jokes... is it a gender/sex thing?