Answer:
What goes up the hill and down the hill, And spite of all, yet stand still?
What is a ten letter word that starts with gas?
How do you discover something that does not exist?
An archaeologist unearths a coin bearing the inscription "57BC". How does he instantly know that it's a forgery?
If a rooster lays an egg on the exact peak of a barn, which side does it fall?
I have a few points but we're not competing. I'll help you win when you're eating. What am I?