Lol. Well theres this cream that supposively makes your leg longer. It's from japan though

How short could you be? Being short isn't always a bad thing, i've always been shorter than my friends but in terms of interacting in society and with women i've never had a problem because I turn my height into my advantage. If you are really concerned over your height maybe you could use gravity to your advantage and try inversion boots and let your body hang upside down for an hour a day, this should uncompress your spine and maybe mile .5-1.5 inches of height (i'm not a doctor so this is only theory). At any rate, if you have back problems at all this will help out in other ways, the other thing I would mention would be thicker sole shoes or some sort of riser. The alternatives aren't very promising, a friend of mine had a condition when he was younger where one leg was shorter than the other so he had to go through this set of pins with a large metal thing on his leg that looked like an erector set, he said the process was painful and it ended up taking around a year to get the desired results so I don't suggest something this drastic.