Wow. It's quite rare for me to enjoy something so tasteless. I like the intro - simple, but a good color scheme makes it look more professional which provides a greater contrast when you see the stabbing. The tongue is really funny, as are the expressions in general, which have a Simpsons-esque style to them. An 8-bit version of Buddy Holly is genuinely amusing, as well as the Bill Clinton gag at the end. Nice job.
Obvious points off for lack of length, voice acting, and more complete animation/concept.