User blog comment:FerbIsMyLuver!/How Awesome Was THAT!!!!!!/@comment-2179598-20110806034244/@comment-3000368-20110807231920

Phineas and Isabella aren't really 10/11.

They've been confirmed to be under 15, so they could be 12 or 13 for all we know. All the 12 year olds I know look that young.

And I know 12 year olds who have... Well, I'm not going into that story...

So being honest, it's not so inappropriate.