There′s a hundred and four days of summer vacation

'Til school comes along just to end it

So the annual problem for our generationIs finding a good way to spend it

Like maybe...

Building a rocket or fighting a mummy

Or climbing up the Eiffel Tower

Discovering something that doesn′t exist

Or giving a monkey a shower

Surfing tidal waves, creating nanobots

Or locating Frankenstein's brain

Finding a dodo bird, painting a continent

Or driving our sister insane!

This could possibly be the best day ever

(This could possibly be the best day ever)

And the forecast says that tomorrow will likely be

A million and six times better

So make every minute count

Jump up, jump in and seize the day

And let's make sure that in every single possible way

Today is gonna to be a great day!

Crossing the tundra or building a roller coaster

Or skiing down a mountain of beans

Devising a system for remembering everything

Or synchronizing submarines

Racing chariots, taming tiger sharks, constructing a portal to Mars

Building a time machine, stretching a rubber tree

Or wailing away on guitars

(Oh, man!)

This could possibly be the best day ever

(This could possibly be the best day ever)

And the forecast says that tomorrow will likely be

A million and six times better

So make every minute count

Jump up, jump in and seize the day

And let′s make sure that in every single possible way

Today is gonna to be a great day

Hey, hey, hey, hey

Hey, hey, hey, hey

Let′s put our heads together and design a master plan

We may miss dinner but I know mom will understand

We've got our mission and suppliers

Yogurt, gumballs and desire

And a pocketful of rubber bands

The manual on handstands

A unicycle, compass

And a camera that won′t focus

And a canteen full of soda

Grab a beach towel

Here we go!

(This is Ferb-tastic!)

This could possibly be the best day ever

(This could possibly be the best day ever)

And the forecast says that tomorrow will likely be

A million and six times better

So make every minute count

Jump up, jump in and seize the day

And let's make sure that in every single possible way

(Seriously, this is gonna be great)

This could possibly be the best day ever (this could possibly be the best day ever)

Today is gonna be a great day

This could possibly be the best day ever

(Today is gonna be a great day)