Cheka Kwa Furaha !

At Mathare mental hospital, Nairobi (Kenya)
At Mathare Mental Hospital, a nurse making rounds walks into a room and sees a patient acting as if he's driving a car.
The nurse asks him, "Charlie! What are you doing?"Charlie replied, "Can't talk right now... I'm driving to Mombasa!"The nurse wishes him a good trip and leaves the room.
In the evening the nurse enters Charlie's room just as he stops driving his imaginary car and asks, "Well Charlie, how you doing?"Charlie says, "I'm exhausted, I just got into Mombasa and I need some rest." "That's great," replied the nurse, "I'm glad you had a safe trip.
"The nurse walks across the ward, and finds Joseph sitting on his bed masturbating vigorously. With shock she asks, "Joseph what are you doing!
"To which Joseph replies, "I'm screwing Charlie's wife - he's in Mombasa!