"Simulating brandishing a weapon" penalty

[gopherdudepart2]

So if you did a karate kick or simulated karate like they do in NFL would the refs throw this flag. Asking in case Danny"Diggler" Strigow ends up with a dirk roundhouse kick after a sack.

 

[Husker Dont's]

A little of the topic. Wadley gets a personal foul, what about the USC player trying to take the ball from Koi after the interception? Would that not also be a personal foul? I also believe that the Gophers were flagged for a celebration penalty as well after the fact.