F4 to F6 

The F4 is a "Fantastic frozen fecal fuck". Where a condom is shit into, placed in a freezer, till hard. Then brought out and used on your partner with the condom. Becomes an F6 without the condom Fantastic frozen fecal fuck free form

I gave my girlfriend an F4 after burrito night, but the condom broke and it went from an F4 to F6. Which made a crappy mess

F4 to F6 by Wiggum September 16, 2021

ALT + F4 

An unoriginal old prank that nobody falls for anymore, (except the 10 years olds)

10 Year old has joined the game.
10 Year old: Hey how do you run fast?
xxmLGpro69x: Press and hold ALT + F4
10 Year old has left the game.

ALT + F4 by this is really long name February 5, 2016

Alt + F4 

Keyboard command to exit out whatever it is you are in.

Press Alt + F4 right now to close out Urban Dictionary.

Alt + F4 by flclimax1 February 6, 2008

Salt F4 

When somebody abruptly presses the Alt + F4 keys to exit a game because they are salty.

Did you just Salt F4?

Salt F4 by Scruffyxoxo November 21, 2016

alt f4 

Press "Alt-F4" in World of Warcraft to make your mage cast a vanishing spell.

Alt F4 is a vanishing spell! It really works! Try it; it really makes things disappear. I shit you not.

alt f4 by spinaltapsoundguy May 1, 2010

Alt-f4

Quit out of your current tab

DUDE, THE TEACHER IS COMING, ALT-F4!!!!!!

Alt-f4 by olive thyroid November 30, 2018

ALT F4 

It's a combination of letters on your keyboard that you use on your friend to piss them off.

Guy1(on laptop)

Guy2:"clicks alt f4 and deletes the page Guy1 was on"
Guy1:WHAT THE FUCK MAN!?!?!!?
Guy2: ha ha get prank bro you must get of that loli henti.

ALT F4 by Daggermaster9900 December 6, 2018