Clearly embarrassed.

A man with a stutter goes to the doctor and says " D-D-D-Doctor, I w-was w-wer-wondering if you c-c-ould help m-m-me with m-my p-p-p-problem"
The doctor says he suspects what the problem is and asks the man to drop his pants.
"Ah, just as I thought" says the Doc. "It's because your shlong is so big and heavy. The effect of gravity on it is transmitted through and up your body so that your vocal chords are stretched and your speech becomes affected."
"C-c-c-can you f-f-f-fix it?" asks the man
"Oh yes" says the doctor "It really is quite a simple operation whereby we remove some of it in order to make it smaller."
"Ok" says the man "D-d-d-do it".

A week later the man returns, quite upset.
"Doctor, the operation has been a complete success as far as my voice goes. But you see, my wife is complaining that I no longer satisfy her as much as I used to. Is there any chance you could reverse the operation?"
At which the doctor replies "Now son, a d-d-ddeal's a d-d-d-deal"!