Premove

Ok, so you all are going to think that I am pretty dumb... but I have this one question: What is premove??? I have no idea how to use it.

Could somebody tell me what it is?

Premove is when in the live chess you play a move when the opponent is still playing it. You can enable it only if you go to online chess settings and turn it on. 

All take a look at that. Thanks.

This blog talks about premove. 

http://derekodomchess.blogspot.com/2011/03/universal-bullet-chess-openings.html

Best for bullet and blitz- but beware- only make a premove when you are SURE of your opponent's next move...

sometimes, if you make the wrong premove, you could lose. 

I know.

happens rarely though. 

It's good if your oppenent has only a few moves.

or if you are running low on time ;)