Taken from Top Gun where Cruise asks to use the shower at; call sign = Charlie's place.
Dude 2 - "Shit! Looks like I'll be pulling a maverick."
A: Well, Senator McCain is a maverick, and I'm a maverick and a hockey mom, which is a lot like a pit bull with lipstick. I may not be answering your question the way you and the liberal media want me to answer it, but that's because I'm a maverick. And Senator McCain is a maverick, but without the lipstick. Did I mention that we're mavericks?
See synonym at loner.
2. In common parlance in the western world to mean one who seems to 'float' between many friend circles, always bored or never satisfied by one clique.
3. Someone who doesn't follow.
See synonym at leader.
Girl 1: "Yeah, he's kind of weird..."
Guy 2: "He's just a maverick"