I cringed every time he hit his head. I mean it just looked like it would hurt, and to keep on hitting it. i know it was a loop but it was done very well. A bit too realistic, now the back of my head is hurting :(
The graphics were vey good as were your drawings. Animation was smooth and, as I mentioned above, realistic.
The sounds were good. Good voice acting. The sound of his head hitting the table was a little too good if you know what I mean, ouch!
Five on violence, I think I already explained why.
One on humor, it was a morbid humor though...
Overall very good, I encourage you to make more like this :)