It's so much fun not knowing where you're goin'
Take a left or a right just going without really knowin'
Whether marchin', flyin', crawlin', waltzin' or rowin'
There's no surprise in life if you know where you're goin'

So walk around like a monkey with a blindfold on
(Woo! Woo hah!)
Like an Eskimo in six months of darkness who misses the dawn
So jump in the maze it's the latest craze
Spend your days going every which way

It's so much fun not knowin' where you're goin'
(Look out!)
It's so much fun not knowin' where you're goin'

(yeah yeah yeah yeah)
It's so much fun not knowin' where you're goin'

(I have no idea where my destination is)

It's so much fun not knowin' where you're goin'
It's so much fun not knowin' where you're goin'

(hysterical laughter)

(Yeah yeah yeah yeah)
It's so much fun not knowin' where you're goin'

(I'm really enjoying it though)
It's so much fun not knowin' where you're goin'

http://phineasandferb.wikia.com/wiki/Not_Knowing_Where_You're_Going