Are you running around SL with huge hands and feet? Now you're panicking because you don't know the reason why?
Probably you have picked up a demo shape and skin from a shop and chosen "Wear" from your inventory. Because the maker of the shape doesn't want you to wear the shape without paying, they have made the feet and hands too big...
If this has happens to you, the solution is easy: go to your inventory and type "shape" in the search window. Then you will see a list of other shapes to try on, most of which will be far more acceptable than your current "troll" outfit.
Well, the solution is easy, of course, if you know what an inventory is. If you don't know what an inventory is, go back to Square 1.