cheap shot
 

look at this and tell me kids don't do what they see the NFL player's doing
http://www.metacafe.com/watch/327755/cheap_shot/

Almost as bad as what happened is the fact that no official noticed it so it went unflagged. The kid's coach did take care of it theough by suspending player the following week.

this is a good reason to not stop watching the whole field once the play is over, still hard to see how the backjudge did not see this, but was not at the game so don't know what was going on at the time this happen just looks real bad on film

My first response was "what back judge?" But then I saw that right at the end of the clip there is one running up.

Nevertheless, the line judge appears to be looking right at this. And if he wasn't, he should have been.