Fred's Surgery

***********
When Fred first noticed his ding a ling was growing larger and staying longer, he was delighted, as was is wife. But after several weeks, it had grown to nearly twenty inches. Fred became quite concerned. He was having problems dressing, and even walking. So he and his wife went to see a prominent urologist. After an initial examination, the doctor explained to the couple that, though rare, Fred’s condition could be fixed through corrective surgery.
'How long will Fred be on crutches?' the wife asked anxiously.
'Crutches? Why would he need crutches? responded the surprised doctor.
"Well,' said the wife coldly, 'you ARE going to lengthen his legs AREN'T you?