A great piece of vocal material, but it could be enhanced by a couple of key additions - you've gone on about having a plot that all fits together, so I'd have expanded it to an angle behind the artist - show the spotty kid drawing this comic and then from there, you can cut to the comic book for when he'd drawing. You can cheat on the animation, by having it set as the computer screen, but just make a mouse pointer over the drawing, to show it's being drawn on the screen, for example.
When it comes to the punchline (see what I did there ;) ), why not set the screen, so that he minimises Flash or Photoshop and opens a google search for porn. That would seem like a better. If you're having him go from drawing board to computer screen, it would work just as well, but you need to get a sound for the chair rolling across the floor, just as one of the little details that make a piece complete.
[Review Request Club]