Of course Mario has a big penis.  If you were 80 feet tall from eating magic mushrooms yours would be big too!  Actually, that's just how it came out.  I normallly would have fixed something like that, but I was trying to make the pictures as fast as possible to preserve the MS Paintness of it all.  
Hee hee, exploding animations are awesome.  I used to do quite a few of them.  I'd link one here, but I don't have access to any right now.