The Night Nurse

A very tired nurse walks into a bank, totally exhausted after an 18-hour
shift. Preparing to write a check, she pulls a rectal thermometer out of her
purse and tries to write with it. When she realizes her mistake, she looks
at the flabbergasted teller, and without missing a beat, she says:
'Well, that's great....that's just great . . . some asshole has my pen.