yah, she does. I did a few drawings of mac as a teenager after pondering this question, and I can tell you; if his head stays the same size he looks NORMAL. Weird, i mean, but cartoon-normal.
This STILL rasies the question of how his skull works. If he smiles really really alot the smile goes up waaay too much. Like, here:
http://www.fosters-home.com/screengrabs/4/406-0036.jpg
I mean, HOW DOES THAT WORK? If mac's face can go from
http://www.fosters-home.com/screengrabs/4/405-0081.jpg
to
http://www.fosters-home.com/screengrabs/4/402-0066.jpg
to
http://www.fosters-home.com/screengrabs/4/402-0083.jpg
to
http://www.fosters-home.com/screengrabs/4/403-0042.jpg
you KNOW someting physically impossible is going on.
Same for Bloo, though sicne he's an imaginary friend it dosn't really matter.
http://www.fosters-home.com/screengrabs/4/403-0078.jpg
http://www.fosters-home.com/screengrabs/4/401-0029.jpg
(linking is okay for screencaps, right sparky?)