Eating Brad Pitt

I'm guessing it's an inside joke, but does anybody know why Brad Pitt is eating almost all the way through Ocean's 11? - XMASTIME

Turns out I'm not the only one who's noticed this:

At this point you’d have to be borderline retarded not to notice that Brad Pitt is constantly eating in his movies. I thought it was kind of funny as a running gag during the Oceans movies, but using the same running gag in Moneyball was kind of lame.