Phineas in “Unfinished Business”

Phineas

You know, Ferb, I've been thinking since there's nothing more fun than fun, why not add fun to everything? [Ferb takes out a piece of paper, folds it in half and sets it on his nose] Fun shoes... Fun oatmeal... Fun origami...well, origami's already fun. [sees the paper on Ferb's nose, that looks similar to a house] Fun...house! Great idea, Ferb! We'll turn our house into a funhouse! By, you know, adding fun!