An acronym for "get out of my fucking way". Usually used when people move at literally 0mph in the hall in front of you, and mostly when you are in a big hurry.
(random boy and girl walk slowly down the hallway holding hands...)
you: can you PLEASE gomfw, assholes.
The couple: fuck you.
(you then have to proceed to awkwardly shimmy past either the left or right side of them, usually hitting lockers or someone else.)