His amputated penis...

One Day this bloke goes into the doctors and says "Eh doc, I get
these splitting headaches in the back of my head, they've ruined
my whole sex life, what do you recommend?"
So the doctor says "There's only one answer I'm afraid. You'll
have to have your penis amputated."
Knowing that he has to get rid of the headaches he reluctantly
agrees. So a week later the man goes into hospital for the op.
After the operation he feels he should celebrate by buying
himself a new suit. He makes his way to the tailors for his new
garments. Whilst the tailor measures his inside leg he asks
"Which side does your penis hang sir?"
Worried the man says "Does It really matter?"
"well yes" said the tailor "'cos if you hang it over the wrong
side you get these splitting headaches!"