I took my kids to the library and asked the librarian if they had any books on Pavlov's dogs

and she said it rang a bell

I told my wife she was drawing her eyebrows too high.

She looked surprised.

I went to the orchard and saw an apple tree with a ladder leaning against it.

I guess it wanted to take its fruit to a higher level.

Why don't scientists trust atoms?

Because they make up everything!