Anything you like, he can't hear you.
or
Should've been called Look Who's Hawking, that's my only criticism.
or
Bozo The Clown has real hair on his head.
or
There are footprints in the butter.
or
It takes two to tangle!
or
Because he want to wake up some day as America's First Dictator.
or
None. They will never find one that burned as brightly as the first one.
or