Jared Goff has NFL talent but unless you watch football consistently, he may not have the most recognizable face.
The Rams quarterback, along with Red Bull, thought it would be a funny idea to prank a college football team with a guy they've never seen before. Goff was even harder to recognize once he underwent his transformation, completely with tattoos and a wig. Bringing in "the transfer" shook up a lot of the QBs already on the squad, but they were ultimately relieved to find out they didn't have to compete against Goff in the long run.
It's funny how people always claim they knew it was a prank all along once it's revealed.