Here's how Saban got this cut on his face during Mississippi St. game

Probably not OK to make your head coach bleed -- unless perhaps you're Alabama defensive lineman Jonathan Allen, and your coach is Nick Saban, and it's an honest accident. 

The coach of the second-ranked Crimson Tide had a collision with his player on the sideline during his team's blowout victory against No. 17 Mississippi State. 

After the contest, Saban, 64, joked about the incident, revealing how it happened. 

Just don't let it happen again, Jonathan.