"Please Don't Laugh" joke
A man goes into his doctors office and he seems very nervous.
The doctor says "what is wrong?"
The patient says "I can't tell you unless you promise not to laugh"
Doctor "I have been a doctor for 30 years and I have never once laughed at a patient"
Patient "well I guess you won't laugh but I will have to show you what is wrong"
"Ok lets take a look" the doctor replies
The man proceeds to pull down his pants to reveal the smallest penis the doctor had ever seen. Try as he might not to laugh the doctor is soon rolling around the floor laughing.
After a few minutes the doctor regains his composure and apologizes to his patient.
"I am so sorry that has never happened before, so what seems to be the problem"
To which the patient replies "Well isn't it obvious doc?.. IT"S ALL SWELLED UP!!"