The second in line for most popular betting tradition in offices today in the U.S. is Super Bowl Squares. Winning with Super Bowl Squares is entirely luck so anyone has a chance of winning. This is probably why it’s so popular.
Super Bowl 49 (XLIX) Square Grid 100 Boxes printable, easy to edit, free to share
The unpredictability of the NFL is what keeps us all interested, however, some folks do have a keen sense of what teams will do well, and what teams won't and these folks are the ones that come up with the lines, odds, and spreads.