Although the penalty was a stupid one because it was careless and came on a failed third-down conversion for Cleveland, it is example No. 1 of why you won't like Ndamukong Suh when he's angry.
Suh definitely needs to play smarter than that, but I will chalk this up to him letting out some preseason frustration. Besides, Suh was already going to be called for a face mask penalty no matter what, so he decided to get all he could out of the penalty. Unfortunately for Jake Delhomme, that meant nearly having his head ripped off in the process.
(Alternate video link in case the NFL removes the one from YouTube.)