Not really a pun but, this is a stupid QOTW
Business man on his first trip to Asia spends 10 days in Hong Kong.

After working hard all day in the meeting room and working harder all night in the knock shops of Kowloon, he wakes on the 9th morning to find his knob is coated in a pea soup green fungus and is incessantly dripping a grayish yellow pus.

Much aghast, he rushes off to see an English Doctor. After a brief inspection the Doc declares that the man is suffering from a nasty case of Hong Kong Dong and that the only course of action is to amputate the inflicted appendage post haste.

Appalled with this diagnosis, the man declares he will get a second opinion. An hour later the man sits down with a Chinese Doctor and reveals the infected implement.

The Chinese Doctor after a very quick look tells the man it is definitely Hong Kong Dong and starts to prescribe a series of traditional Chinese medicines for the man to start taking immediately.

After being handed the third jar of pills the man asks if there will be any need to amputate.

"Oh No" says the Doctor "no need at all............................ fall off by self in 2 days"
(bad_advice QOTW survivor from the first trollocost!, Sun 8 Mar 2009, 14:10, Reply)