Answer:
When the day after tomorrow is yesterday. Today will be as far from Wednesday. As today was from Wednesday. When the day before yesterday was tomorrow. What is the day after this day?
The more of it there is, the less you see.
A hill full, a hole full, yet you cannot catch a bowl full.
Gold in a leather bag, swinging on a tree, money after honey in its time. Ills of a scurvy crew cured by the sea, reason in its season but no rhyme.
What flies around all day but never goes anywhere?
What did the piece of wood say when he saw the screwdriver and screws approaching?