Because he can't even.
He wears mittens.
Because it's two gross! (A gross is a measurement unit for "144". So 2 * 144 = 288. Or "two gross".)
A Chewie
Han Double
The man on the moon? Santa Claus? Or an honest Lawyer? Yes you got it Santa. The other two are figments of the imagination.
Astronomical
Because he's got rusty knees.