It's Always Sunny in Philadelphia, Season 5

Dennis:
I hate to tell you this bro, but you do not have the core strength to scale the facade of Citizens Bank, you just don't.

Mac:
What?! I work out all the time!

Dennis:
Yeah but you only work out your glamour muscles and you know it.

Mac:
I work out my core.

Dennis:
No you do not work out your core. You're totally arm heavy, you're all bi's and tri's and everything else is just fat and, and ribs.

Mac:
Bro I can do way more push ups than you and that's like 16 different muscle groups I think.

Dennis:
That is beyond retarded what you're saying right now. I can do way more push ups then you even though I was just hit by a car...