When a friend asks what happened in class today because they weren't there, you replied "Didn't pay attention. NSFG."
by LetChaosRule March 7, 2011
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.
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."
by FrançoisTheFirst January 17, 2023
"not to be NSFG, but..."
by Get the fuck up January 28, 2019