Luke Bryan has released a new video in his quest to hang on to the ACM Entertainer of the Year title again this year. The clip shows Luke crashing a kid's birthday party and show him how to really "man up" taking a swing at the pinata. Fans can vote online at voteACM.com. Luke will co-host the ACM's with Blake Shelton this Sunday beginning at 8PM on WBOC (CBS).