a bad one..but 

Good news and bad news 

The doctor at a regional hospital tells his patient, "I have good news and bad news for you. Which would you like to hear first?" 

The patient asks for the bad news first. "I have the results of your examination of your injuries to both your feet and we're going to have to amputate right away." 

"That's the bad news? How could there be good news?" 

"See that man in the lobby? The seedy-looking fellow?" 

"Yeah," says the patient. "What about him?" 

The doctor looks at the patient with a grin, "He wants to buy your shoes!