Definitions by FrançoisTheFirst

NSFG 

Not Safe For Gym.
An acronym widely used among gymsters when they happen to get nudes sent to them while they're no paining no gaining.

"Fuck, that dude snapped me his junk while I'm bulgar squatting! This is totally NSFG bro... I'm so upset."

NSFG by FrançoisTheFirst January 17, 2023