A person that is a fan boy of the Microsoft Windows Operating System and becomes enraged when anyone tries to question anything bad about the Windows Operating System.
Person 1: "Wow Windows Vista sure does suck! It crashes on me all the."

Person 2: "WHAT? NO? Windows is the best! You just don't know how to use Windows."

Person 1: "Wow, your such a winfag"
by PowerUser1992 September 22, 2010
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Winfag is a person who defends and doesn't see the downsides of Microsoft Windows, while calling other OSes bad for many reasons. These people frequently argue about this as well.
- Vista is probably one of the worst operating systems from Windows.
- VISTA IS A GOOD OS, IT WAS JUST PEOPLE HAD SH*TTY SPECS WHEN IT RELEASED. <insert insults to unix OSes like Linux or MacOS>
- Alright then, Winfag. Maybe you should spend less time sucking to Windows and more on doing research next time.
by Chins_man July 14, 2021
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