There's really no sure way to know.
We don't know, they've never tried it.
We don't know she hasn't opened her presents yet.
Who's asking
By holding the bulb up to the socket and waiting for the world to revolve around them.
One. They're efficient and don't have humour.
Just one but he wants to do it thirty-two times and when he's done everyone says that his last light bulb was much better.
He had no prior convictions.