Charlie wanted a new birth control method and his doctor suggested a vasectomy. Charlie agreed and the doctor said he could perform the operation in his office. At a crucial moment during the procedure one of Charlie's testicles fell to the floor, and the nurse, who was wearing high heels, accidentally stepped on it and crushed it.
[Standard operating procedure.]
However, the doctor noticed a jar of pickled onions on his nurse's desk.
Taking an onion, and realizing it was the right size and weight, he placed it in
Charlie's scrotum and completed the operation.
A few months later Charlie returned for a check up. When the doctor asked how
things were going, Charlie replied. "Pretty good, Doc. At least my wife's not
pregnant, but there are some strange side effects. Every time we make love, my
wife gets heartburn; when I pee my eyes water; and whenever I pass a hamburger
stand, I have an erection.