Mac is back! And out of no where too! My friends give me a lot of shit for being obsessed with Mac, but seeing his videos as soon as they drop is kinda cool. Mac really changed up his game on this one but he still goes hard as f*ck. I feel like this song is emblematic of his positive attitude: when life gets bad or haters hate, smile back and thumbs up! TreeJ's videos are getting better and better and weirder and weirder. Don't forget about Blue Slide Park coming out 11/8/11, and watch 'Smile Back' after the jump!