
Dave was buying sheets of stamps. Since there was nobody else in the post office his teller offered to show him the newest stamp, beautiful flowers.

Teller: Are you sure?
Then she thumbed through other sheets. Up came Johnny Cash stamps.
Dave: She likes Johnny Cash.
After a little more flipping she came up with Rosa Parks stamps.
Dave: She likes Rosa Parks.
Teller: Your wife likes Johnny Cash and Rosa Parks but doesn't like flowers? Are you sure?
Dave: Yes, I know my wife. I'm sure!
***