A man goes to the doctor and says "Doctor, every time I break wind it sounds like a large Japanese motorbike going by the house."

The doctor examines the man's bum and says "Ah, I see the problem. You have a large abscess on your bottom."

The man asks why this would cause this particular issue, to which the doctor replies "Haven't you heard the old saying 'Abscess makes the fart go Honda'?"