"Serious backache" joke

At a doctors surgery one morning a patient arrives complaining of
serious backache. The doctor examines him and asks him"What
the hell did you do to your back?"
The patient replies "You know that I work for a local night club? Today
morning I got home to my apartment early and heard a noise in my
bedroom. On entering I knew someone had been sleeping with my wife and
the balcony door was open. I rushed out the balcony door and did not
find anyone. As I looked down from the balcony I saw a man running out
and he was dressing himself.I grabbed the fridge and threw it at
him, That's how I strained my back"
The 2nd patient arrives looking as if he has been in a car wreck. The
doctor says "My previous looked bad, but you look terrible.What the hell
happened to you?" He replies, "You know I have been unemployed for a
while now .Today was the first day at my new job. I forgot to set my
alarm and was running late. I was running out of the building, getting
dressed at the same time, and you won't believe it but I was hit by a
fridge."
The 3rd patient arrives; he looks even worse than the other two patients
do. The doctor is shocked. Again asks, "What the hell happened to you?"
'Well I was sitting in a fridge & someone threw it from the 3rd floor!"