There's a hundred and four days of summer vacation
'Till school comes along just to end it
So the annual problem for our generation
Is 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 nano-bots
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
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
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
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 to one
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!

Let's put our heads together and design a master plan
We may miss dinner, but I know mom will understand...
We got our mission and suppliers, purple gumballs and desires
A pocket full of rubber bands, the manual on handstands
A unicycle compass, and a camera that won't focus
And canteen full of soda, grab a beach towel here we go! (this is Ferb-tastic)

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 to one, 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!

(Seriously this is gonna be great day)

This could possibly be the best day ever (Today's Gonna be a Great Day) [2x]