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.

Mac Quotes

Mac: Fight Milk! The first alcoholic dairy based protein drink for bodyguards!
Charlie: By bodyguards! I drink it every morning so I can fight like a crow.

Naked pics online? That's disgusting. On a website? There's so many of them though. Where? Which one?

Mac

It's Always Sunny Quotes

Mac: Fight Milk! The first alcoholic dairy based protein drink for bodyguards!
Charlie: By bodyguards! I drink it every morning so I can fight like a crow.

No I don't eat dragon, cause, uh, it's not a meal for peasants, it's a meal for kings, and I'm sort of a common man. But they don't eat us, it's a common misconception. They actually eat gold and treasure -- that's why they're always sitting on a pile of it.

Charlie