Signing out!

Your cookies have been cleared, right?
I was just being bored and thinking if I found the right cookie if I could make a shortcut on the dtop to the cookie folder and just copy it in when I wanted to sign in.
Also, is it possible if someone had toooo much time on their hands (assuming that that method works) that they could get my special little zel cookie and log on as me?
I guess I haev to much time on my hands. O_o