A man goes to the doctors and says "Ddddddoctor, yyyyyou've gggggot to hhhhhhelp me, I've gggggggot this ttttterible ssssstuter!"
So the doc says, "Ok, I'll just examine you see if I can spot the problem."
When the guy drops his pants, his dick almost hits the floor it's so long. "Aha," says the doc, "There's your problem."
"Wwwwwwhat?" says the man.
"Well, your cock is so long the weight is pulling on your stomach muscles causing you to stammer and stutter."
"Cccccan yyyyyyou dddddo anything?"
"Well not much, your only hope is a transplant."
"Ppppppplease dddddoc yyyyou've got to hhhhhhhelp me."
So the doctor arranges the operation.
A few weeks later the guy goes into the doctors again. "Doc," he says "the voice is great, I can talk, order beer, everything. It's great. But there's one problem, this small cock is crap with the birds, any chance of getting my old knob back?"
To which the Doctor replies "Nnnnnnnnnnnnno fffffffffffuccckinnnnnn chhhhhance.!!?