I found this funny.
Panta, do you wanna laugh? ...
THE LATENT DEMAND THAT SHORTING CREATES - Another aspect of shorting stocks that you should always keep in mind, and which in some respects increases risk, is the idea of "latent demand". When you short the stock, you actually are building up latent demand for the shares. This is because at some point in the future (unless the company goes out of business) you will have to be a buyer of the stock in order to return the shares to their rightful owner. A wave of short sellers will one day mean a wave of buying.
SHORT SQUEEZE - If you have been trading stocks for any amount of time, you will have probably heard the term "short squeeze". A short squeeze is actually when there is a sudden demand (i.e. buying) in a stock which has a large amount of shares outstanding on the short side. If the buying keeps up and starts to force short players to cover their short positions, the result can be quite sever. Buying increases the share price, which in turn tends to produce additional fear (and short covering) among short-side players in the stock market. As people rush to buy stock and cover their positions, this continue to dizzying heights until a normal supply/demand situation returns to the market. As the old saying goes, "He who sells what isn't hisn, buys it back or goes to Prison". The bottom line is that if the stock you have borrowed and sold is suddenly required, you may end up being "bought in" whether you like it or not.