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1.
NGF
Nerdy Gay Fag

When someone is so nerdy it surpasses the use of "that's gay."
David your such a NGF.
by abovelife July 01, 2010
 
2.
NGF
Nobody Gives a Fuck (NGF)

An abbreviation used to describe an event or another matter that is irrelevant and not important.
- I got an A in my final exam!
- NGF, man.
by Iganish August 24, 2014
 
3.
ngf
Abbreviation: Non Gay Fashion.
"I love you guys, ngf" meaning "I love you guys, loving meant in a non gay fashion, a non homosexual way".
by aapsterdam May 13, 2010