Windows XP

The best operating-system in the history of mankind. If you still use it today, you're cool as f**k!

Peter: Which operating-system do you use?
William: I recently upgraded to Windows 10.
Peter: LOL, Pathetic! I still use Windows XP because I'm not a pussy like you. Instead, I'm drowning in it. Now grow some balls and downgrade to XP!
William: You're totally right! I'll do it right now!