Was a nurse, and a very good one at that. One day she walked into a bank, totally exhausted after a 16-hour shift. Preparing to write a check, she pulled a rectal thermometer out of her purse and tried to write with it.
When she realized her mistake, she looked at the flabbergasted teller, and without missing a beat, she said, "Well, that's great...that's just great...some asshole has got my pen!"
49 minutes ago