You Know You`re a Mac User When...

...you are on AIM on a PC and you forgot all your friend`s screenames and get them mixed up, because on iChat you have it configured so that it shows the real name and not the screen name.

Also, when you are on a PC you unconsciously move the mouse to the upper right hand corner and get mad when nothing happens, because you have too many windows open and you just want to get to that particular one that you need in a flash.