wetting my fingers

A husband and wife are lying down on their bed. The husband is reading a book. The wife simply lies next to him. The husband pulls up his wife's nightie. Every five minutes, he touches her vagina and continues reading. The wife gets up and starts undressing.

The husband asks - " What are you doing ? "
The wife replies - " You kept touching between my legs. I thought you were in the mood and wanted sex. So, I am un-dressing ! "
The husband replies - " Don't be silly. I was simply wetting my fingers, to be able to turn the pages of this book ! "