Oh by all means, he was a fucker! But however still, I don't think his home training had anything to do with it. On the contrary, i think he was just naturally an ass.

His intent though, I believe was not to hurt me - well, at least not to hurt me SO bad. In his words:

At the end, I guess he was just being your good ole fashioned, young and stupid naive little kid, whom didn't realize how sharp pens could be and just how dangerous they could hurt the butthole.