Wow. If Bradley Cooper really did everything in his career just to prove Louis C.K. wrong then it's probably time to get scared because it means he's capable of anything.
Or maybe it means we should all set Cooper challenges and he'll do them just to prove us wrong. Hey Bradley, bet you can't solve world hunger, ya schmuck.
As Gawker points out, Louis C.K. made the below joke in 2009, and Cooper famously asked Sean Penn a question on Inside The Actors Studio in 1999, before they both starred in American Hustle this year, wherein Cooper gets to make a fool out of C.K. in various scenes.
Now that's payback.