"Dude, the girl I met on Tinder yesterday was smoking hot. She came over to my house and we started to make out for what seemed like hours... then I started to unbutton her blouse and soon realized that she didn't shave her armpits and they sure stank. She immediately told me that she was a staunch feminist. Well, needless to say, I told her GTFO!
A command telling someone to "Get the fan on" , not to be confused with "Get the fuck out" although, it may have the same acronym, its safe to say someone is telling you to "get the fan on" when they say GTFO to you.
Ryan : Wow, it sure is hot in here...
Wesley : THEN GTFO NOOB
Ryan : What?
Wesley : Get the fan on!
Ryan : oh..... kay.