Childish or not, Bert is certainly an argument for the case of confidence. At least this week his "F*ck it, I'm just gonna do what I want, I'm too old for this sh*t" attitude worked better than the "OHMYGOD OHMYGOD OHMYGOD THERE'S A PROBLEM WITH OUR OUTFIT. THAT'S IT, WE'RE STARTING OVER FROM SCRATCH!" refrain that…