Random...

the Hamster uses the excuse that his bum hurts whenever he doesn't want to do something.

Go clean your room Hamster. "I can't, my bottom hurts."
Go play outside Hamster. "My buns are tired, I don't want to."
Come eat Hamster. "I had a cookie. I don't like what we're having. That looks yucky. And my butt hurts."

You get the idea.

I'm not sure where this came from, and I'm sure a psychologist could write a killer piece for a journal about it, but there it is. I don't think it would work for me though.

I can't pay the electric bill because I have sore buns.

Yep, it's much cuter coming from a 4 year-old.