In news that will make you -- yes -- root for Justin Bieber, the Biebs' cellphone ring-tone is... Mike Gundy's "I'm a Man! I'm 40!" rant from the 2009 college football season. That's kind of awesome.

Per SBNation's Jason Kirk: "Most astonishing part: the end, where the 16-year-old actually quotes Gundy's speech about modern manhood and fatherhood and life and football, even nailing the parts that didn't just play via his phone. This means Bieber actually knows Mike Gundy's rant by heart. Jaw in basement."

Watch it here: