Nurses aren't supposed to laugh...
"Of course I won't laugh," said the nurse.
"I'm a professional. In over twenty years I've never laughed at a patient."
"Okay then," said Bob, and he proceeded to drop his trousers, revealing the smallest male part the nurse had ever seen. In length and width was almost identical to a AA battery.
Unable to control herself, the nurse tried to stop a giggle, but it just came out. Then she started laughing at the fact that she was laughing.
Feeling very badly that she had laughed at the man's part, she composed herself as well as she could.
"I'm so sorry," she said..."I don't know what came over me. On my honor as a nurse and a lady, I promise that won't happen again. Now tell me, what seems to be the problem?"
"It's swollen," Bob replied.
She ran out of the room.