Mac is one of the owners of Paddy alongside his friends, Charlie and Dennis on It's Always Sunny in Philadelphia. Mac is generally seen wearing t-shirts, often without sleeves, on account of being so proud of his phsyic. Unfortunately it doesn't seem to work for the guy as most people see him as the jerk. Personally, we love the guy.
Naked pics online? That's disgusting. On a website? There's so many of them though. Where? Which one?Mac
Charlie: I'll totally pull a Good Will Hunting on those kids and that'll put them in their place.
Mac: How you gonna do that?
Charlie: Well, you've seen the movie right?
Charlie: So all I gotta do is, I'll ask them some big shot, like math or science, history-type college question aand that will totally stump them by knowing a lot more about the answer than they do.
Mac: In that movie, Matt Damon played a genius janitor, you're just a janitor.
Charlie: Right, you stumped me with that one.