No Fucks Were Given
Means there are no judgments; you do what you want.
YOU JUST DON'T GIVE A FUCK :)
Also, you're friends love you no matter what, so they say it back to you, to let you know that they accept your drunk-ass, whore-y self.
Doris: I was drunk last night and fucked Marcus.
Cindy: Who cares? No fucks were given.
Kimberly: I was so drunk, I puked all over myself.
Rick: Bro, I couldn't get it up last night.
Tim: No fucks were given, man.
Rick: Literally.... :/