I've heard those drunken rants and even had to dodge a punch once because I did the oh so nasty thing of, get this, disagreeing. It's hard to live a life of not giving much of a fuck when one is drunk, since the booze equals senseless drama, but only when people have had too much, or do it daily.

And not giving a fuck, to me, is simply trying to remain calm, chilled out. Not letting the small things bother you. Not allowing your mind and paranoia about what others might be thinking control you. 25 is usually the age when most break free of that high school hallway mentality. Once you stop trying to be cool and worrying about what the cool kids are doing, it's much easier to just be cool, genuinely.