Serious Fun

"Serious Fun" is a song from the Phineas and Ferb series finale, "Last Day of Summer". Ferb Fletcher and Phineas Flynn surf on hoverboards through the city of Danville along with their friends as they make the most of the final day of summer vacation.
==Lyrics==
(Doo-doo-doo-doo
Doo-doo, doo-doo-doo...)
Phineas: Get out your tool case,
Put on your game face.
Get out your brushes, gonna paint this town.
Let's just get rocking,
No time for talking.
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, doo-doo-doo...)
Every day of summer,
We've given a hundred percent.
But today, we'll give a hundred and one.
Baljeet: Though that is not mathematically possible...
Phineas: You know what we mean!
Baljeet: Yes, I understand: hyperbole.
(Doo-doo, doo-doo
Doo-doo...)
Phineas: We set a precedent
For entertainment.
We're doing something, and it's gonna be big.
Put on your glad rags and pack a lunch bag.
No, something smaller, not that suckling 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... !) 
pt-br:Serious Fun
Category:Season 4 Phineas and Ferb songs
Category:Songs
Category:Opening songs