How do you sign out

How do i sign out of the site I'm at a friends house right now and he has his Firefox set up so hes always logged onto his accounts. I have mine set up so that i sign out every time i close my Firefox so i never worried about signing out of the site. I cant find the sign out button can someone please tell me where it is located.

Thank you :)

On you name tab under blog and list is logut

Hover over your name in the top of the page and there is a "logout" option in the white window that pops open. Its under the "my stuff" section.

At the top of the page, hover the mouse over your username, and logout will be an option on the menu that appears.