A meme about the game Tetris that originates from a quote from the Classic Tetris World Championships of 2016. When a player named Jeff did a Tetris (clearing 4 rows at once), the host said this.
A mythical gym creature capable of moving seemingly impossible amounts of weight all while demonstrating below average form. Some say you can identify a Bro Jeff by seeing them front squat 315 lbs with a wide stance and overextending the knees.