Where does the wind come from?

Little Johnny asks his father: 

"Where does the wind come from?"

"I don't know."

"Why do dogs bark?"

"I don't know."

"Why is the earth round?"

"I don't know."

"Does it disturb you that I ask so much?"

"No son. Please ask. Otherwise you will never learn anything."

Two Ducks !!

Two ducks were sitting in a pond.

One of the ducks said: “Quack.”

The other duck said: “I was going to say that!”