Why do we say "hello", if the word "hello" has "hell" in it. Are we trying to tell the other person to go to hell...

A bullet only does it's job, after it's fired...

A babysitter is a teenager acting like a grownup just so grownups can go out and act like teenagers...

Humans are afraid of being bitten by spiders, but we have more teeth...  Spiders are afraid of being stepped on by humans, but they have more legs...