Jack went to the doctor looking very sad indeed. The doctor said, "What's wrong, Jack, you're the picture of health for a man your age."
Jack said, "B-b-b-b-ut D-d-d-doc, I c-c-can't g-g-g-et rid of this st-t-t-utter. Help me!"
The dog looks him over thoroughly and says, "Jack I got good news and bad news. I found the cause of your stutter. Your penis is too big, it's straining your vocal chords from the weight. I can fix it but I have to give you a smaller penis to do it."
Jack says, "It's all r-r-r-ight, d-d-doc, I'm old now. G-g-g-o ahead and m-m-make the switch."
The operation was a success, but after a couple weeks Jack found he and his wife both missed the huge penis. He went back to the doctor to ask for a reversal. "The stutter's gone, Doc," he said " but I really miss my huge penis. Can you put it back?"
"S-s-s-sorry, J-j-j-ack," said the doctor, "b-b-but a d-d-deal's a d-d-deal!"