A police officer

A police officer, though scheduled for all-night duty at the station, was
relieved of duty early and arrived home four hours ahead of schedule, at 2 in
the morning. Not wanting to wake his wife, he undressed in the dark, crept into
the bedroom and started to climb into bed. Just then, his wife sleepily sat up
and said, "Mike, dearest, would you go down to the all-night drug store on the
next block and get me some aspirin? I've got a splitting headache."
"Certainly, honey," he said, and feeling his way across the dark room, he got
dressed and walked over to the drug store.
As he arrived, the pharmacist looked up in surprise, "Say," said the
druggist, "I know you - aren't you a policeman? Officer Fenwick, right?"
"Yeah, so?" said the officer.
"Well what the heck are you doing all dressed up like the Fire Chief?"