DNA-Travel until you're Small
A little animation. Candace Flynn is busting her brothers when she was hit by Doofenshmirtz's "Shrink-inator" by mistake. Phineas can't see her, and so he accidentally swallowed her. The shrink-inator still has a few after-shocks and effects, so sit back and relax as Candace travels through Phineas' artery. (CREEPY :P)
CHANGE OF PLANS: I won't stay offline 'till next week, but I'm still disabling comments.