Rick,
They cut the muscles and tendons that connect you to yourself.....
The result is when in a "flaccid" state you "hang" lower (and further back). This makes you look a little longer when walking around the gym (although a side effect is you get a bit "skinnier").
Unfortunately, when erect, you are the same size as before, and now since you have no muscles at the base, you can little "slip" sideways a bit to each side. The result is a HIGH risk for injury due to "aggressive" style sex.
There is a surgery that you can get that injects fat into your tissues to make you a bit thicker, but nothing to get longer. The "thicker" surgery looks pretty fake and most women find it appalling.
As I told a female friend of mine, if there were an actual pill, operation, or pump that really worked, there wouldn't be a man alive today that wasn't sporting a monster.....