I know this joke about the difference
a fat man goes to the doctor and says: docter I tried everything, all the diets, the pills everything, but I just do not lose weight.
so the doctor replies: I have just the thing for you; put on this special track suit, it will make you sweat more then ever, and enter the next room.
So the man does what the doctor asked and when he is in the room, another door opens and a gorgeous woman enters. She says to the man: if you are able to catch me, you can do with me what ever you want

so the man runs and runs, and sweats like a pig, but does not catch her.
After a couple of these sessions the man tells this to his neighbour, who could also loose some pounds.
So he goes to the doctor, and yeah, he has to put on the track suit and wait in the next room.
THen the door opens and the most disgusting woman ever enters, and she says: if I can get you, I can do with you what ever you want

so the man starts running and runnig, and thankfully he does not get caught by the woman.
When he gets back to the doctor he asked: Why is this possible? my neighbour got a beautiful woman, and I get stuck in a room with frankensteins girlfriend!
and the doctor answers: now thát is the difference between public and private insurances
