User blog:Nan the cowdog/Fanon's Head-Canons!

Give out any and all Phineas and Ferb related theories! Why is Phineas the only one with a triangular head? Why is Ferb's voice so freaking deep? Heck, even post SHORT (meaning not really article worthy or you don't want something that short as a article) one-shots (thing that are not over 3 paragraphs long) GET TO THINKIN'!