I have only had my macbook pro for about 2 weeks now and the other day i was with my friend i got it out and he goes let me see and he grabbed it and his thumb went slap on the screen and then i hit him and said get off! and h put his other hand over and grabbed the other side with his thumb on the screen so i had to let go so he didnt damage it! I was reallly annoyed with him and now i need to get rid of finger prints...so how can i do it without buying any stuff?