Popsugar Entertainment Halloween Halloween Costumes For Men 2017 This Year's Hottest Pop Culture Halloween Costumes For Men October 30, 2017 by Shannon Vestal Robson View On One Page Photo 12 of 18 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 12 Baby Groot From Guardians of the Galaxy 2 What to wear: A tree costume with big baby eyes. How to act: Say "I am Groot" in a tiny baby voice and do some really adorable dances. Previous Next Start Slideshow HalloweenPop Culture Halloween CostumesTVMovies