NORTH MIAMI, Fla. – If you follow Dave Grutman on Instagram (or have taken note of any of the billboards along the streets of the Design District), you’ll know that Grutman, known as “Groot” or just “Grutman,” has replaced Pitbull himself with being “Mr. After its inaugural course in 2019, the class is back in session after having to skip an academic year due to COVID. AdOn Tuesday, March 2, Grutman gave his students an overview and glimpse into his work ethic, background, and lifestyle at FIU’s Biscayne Bay Campus. “These are the things you’re going to need to know when opening the place.”And in true Grutman fashion, the class didn’t lack any special appearances. Grutman is known for his knack for creating relationships with celebrities and having the celebrity seal of approval on his endeavors.