MORE than just an abbreviation for "I Dont Give A Fuck." IDGAF is an attitude..a brazen spirit...A state of mind..
To be IDGAF is to have high energy that's legit, charismatic and ultimately, positive in every way. In no way is it negative, as long as it is used with moderation and consideration of the environment. (for example being sexually assertive idgaf on a first date may not be the best idea, unless you know she's into it ;)
IDGAF-ery is a common trait among ballers, musicians, pimps, sensual lovers, dancers and MLBCs.
Nick: "c'mon John, this is the last bus that gets us across town, I'm not gonna rap and break dance down the bus aisle while you be droppin' beats...we'll get all kinds of annoyed responses and probably get us kicked off."
John: "hey man, IDGAF!!! No worries."