300+ pound men, protect the quarterback and push the defensive linemen forward on a run play. They are the only males that are 6 foot 5 weigh over 300 and can still run a 4.4 40 yard dash. They are the hogs on the team and require the most water breaks and are usually smarter then the defensive linemen since they need to know all 200 plays and 100 line calls. Slower then defensive linemen, but smarter, they put all the retards on defense because all they have to do is kill the man with the ball.
The defensive line was pushed back by the mean, fat offensive lineman when the ball was snapped.