puzzling grammar questions

I found some questions in terms of grammar which really caught my interest...here are they...

1. If electricity comes from electrons, does morality come from morons?

2. Why do we call it an asteroid when it's outside the hemisphere, but call it a hemorrhoid when it's in the anus?

3. Why do we say " I slept like a baby" when babies wake up like every two hours?

4. If corn oil is made from corn and vegetable oil is made from vegetables, what is baby oil made from?

5. Why do banks charge a fee on "insufficient funds" when they clearly know there is not enough money?

6. Why are you "in a movie" but you're "on TV"?

7. Why do you have to "put your two cents in" but it's only a "penny for your thoughts"? Where's that extra penny going to?

8. Why is it that 'bra' is a singular when it covers two things while 'panties' is plural when it covers only one?

9. If a person 'sing' we call him 'singer', if a person 'dance' we call him 'dancer', if a person 'play' we call him 'player', then why if a person 'rape', we don't call him 'rapper'?

anyone who have any answers or thoughts or ideas...please share them with me ;)