If they are under 16 you should just do them in your head.
Because they need a man to do it for them
The older they get the easier they are to pick up.
Cliff.
Because they record everything. (I swear I made it up n I'm brown too)
They combined for 16 paws.
Na na na na na na na na na na na na na na na na BATMAN!!
Americans don't get them.
You have to strike them against a rough surface to get them to work.
All the trees have square roots.
Because it gives them square roots