"We don't know what it is,
but we do know it's contagious."

Old Lady's Remorse
A nurse at the beginning of her shift examines an elderly and slightly deaf lady. She places her stethoscope on the patient's chest wall and instructs "Big breaths". The old lady remorses, "Yes, they used to be!"

Insomnia
A man went to the doctor complaining of insomnia. The doctor gave him a thorough examination, found absolutely nothing physically wrong with him, and then told him, "Listen, if you ever expect to cure your insomnia, you just have to stop taking your troubles to bed with you." "I know" said the man, "but I can't. My wife refuses to sleep alone."

What's a Prostate Problem?
A man walks into his doctor's office and sits down in the waiting room. While he is waiting his turn to be seen, a casual acquaintance walks in and sits down next to him. The newcomer asks " W w what are yyy you ddd doing here?" The man replies, "I am waiting to see the doctor." "W wwhy dd do yyy you wwant to sss see hhim?" The man replies, " Well, if you must know, I have a prostate problem." A pp prostate ppp problem, wwhat's ttthat?" "Well, if you must know, I pee like you talk."

Psychological Tests
A patient goes to a psychiatrist for the first time and is given some tests. The psychiatrist draws a circle and says, "What does this make you think of?" "Sex." The psychiatrist draws a tree and repeats his question. "Sex," the patient answers again. The psychiatrist proceeds to draw simple figures of all sorts.... a house, a car, an apple, and so on.... each time getting the same response. Sex, sex, and sex. Finally the psychiatrist says, "You have an obsession with sex. " The patient says,"Me? You're the one who's drawing all those dirty pictures!"

Source: Medindia.net