Answer:
What did addition say to subtraction when they discovered each other on Facebook?
A deep well full of knives
What's higher than the king?
What goes with a car, comes with a car, is no use to a car, but the car can't move without it?
How do you know if a tiger is male or female?
As round as an apple. As deep as a cup. All the king's horses can't pull it up.