Serious Fun(From "Phineas and Ferb"/Soundtrack Version) - Phineas

Doo-doo doo-doo

Get out your tool case

Put on your game face

Get out your brushes

Gonna paint this town

Let's just get rockin'

No time for talkin'

Just fourteen hours till the sun goes down

We've got one last day of summer

One more day before school has begun

One last day in the sun

Let's have some serious fun

Doo-doo-doo-doo

Doo-doo

Every day of summer

We've given a hundred percent

But today we'll give a hundred and one

But that is not mathematically possible

You know what we mean

Yes I understand hyperbole

Doo-doo doo-doo

Doo-doo

We set a precedent

For entertainment

We're doin' somethin' and it's gonna be big

Put on your glad rags and pack a lunch bag

No somethin' smaller

Not that sucklin' pig

We've got one last day of summer

One more day before school has begun

We've got one last day in the sun

Let's have some serious fun

Let's have some serious fun

Let's have some serious fun

Let's have some serious fun

Let's have some serious fun

Let's have some serious fun

Ooohh yeeaaahh