There's roughing the kicker and then there's what Antonio Brown did to Browns punter Spencer Lanning. While returning a punt, Brown went full Karate Kid, cranking Lanning in the face/helmet with his cleat.

Let's try that ... in slow mo:

The result was an "unecessary roughness for kicking the defender in the head" penalty and, briefly, 1st and 103.

The Steelers didn't ACTUALLY start that far back. And the most impressive thing? They still managed to score. They ended up beating the Browns 30-27.

Check out the height Brown gets prior to unleashing his full fury on the unsuspecting Lanning:

Antonio Brown kicks punter Spencer Lanning in the face. (USATSI)
Antonio Brown leaps into the air and then transforms into Jackie Chan... (USATSI)

Performing a high-risk maneuver that is wildly illegal in the NFL. (USATSI)
Performing a high-risk maneuver that is highly illegal in the NFL... (USATSI)

On a punter. (USATSI)
...On a punter. (USATSI)

Despite eventually losing to the Steelers, Spencer Lanning took it all in, uh, stride when asked about the kick: