Isabella: I'm just the curious girl 'cross the way
Every day I come over and here's what I say...

Whatcha doin', whatcha doin'
What's the day's activity
Whatcha doin', whatcha doin'
By any chance, could it include me?

Whatcha doin', whatcha doin'
Fireside Girls: (Whatcha doin')
Isabella and Fireside Girls: I don't mean to disturb
Isabella: Whatcha doin', whatcha doin'
Fireside Girls: (Whatcha doin')
Isabella and Fireside Girls: You know it's not really directed at Ferb
When I say-ay-ay-ay-ay
What'cha doin'?

Isabella: Don't you know, Phineas? You have no idea
That every day I'm just dyin' to see ya...
And say...

Isabella: Whatcha doin', whatcha doin'
Fireside Girls: (Whatcha doin')
Isabella and Fireside Girls: I really wanna know
Isabella: Whatcha doin', whatcha doin'
Fireside Girls: (Whatcha doin')
Isabella: Can I be part of the show
Isabella and Fireside Girls: When I say-ay-ay-ay-ay
Whatcha doin'?