A hilarious video posted on Funnyordie.com offers the latest — if not the last — word on whose hair is sexier, Tom Brady’s or Justin Bieber’s. Sports journo Kenny Mayne begins his report by wondering why Randy Moss left the Patriots. Was it grooming issues? Tom ordering Randy to cut his beard? And why hasn’t Brady felt comfortable talking about “the incident,’’ Mayne asks the QB, who seems taken aback. “What incident?’’ deadpans Brady, describing himself as a beard-loving, ZZ Top fan. (Cut to the team locker room, where two beefy linemen sport strap-on ZZ Top beards). “Why does everyone want to talk about my hair?’’ whines Brady, curling iron in hand. “What’s the big deal?’’ When Mayne questions Bieber about his own hairstyle, the teen sensation throws Tom Terrific under the bus. “Seriously bro, what’s up with Brady’s hair? I own this look,’’ snarls Bieber. “He’s like, 40. He’s gonna be gray soon. He’s gonna look stupid.’’ Mayne goes back to Brady, who says men in his family never go gray. Gray hair “is a sign of weakness’’ he tells Mayne, staring at Mayne’s salt-and-pepper hair before apologizing. Very funny stuff.