Do you wanna build a portal gun?

Do You Wanna Build a Portal Gun?
  Sung by Wheatley and GLaDOS
   [STILL SUBJECT TO CHANGE]

GLaDOS?
Do you want to build a portal gun?
Let's boss test subjects around?
I never see you anymore
Open up the door
It's like you just shut down!
We'd incinerate best buddies
And now we don't...
I wish you would tell me why!
Do you want to build a portal gun?
It doesn't have to be a portal gun...
  Go away, moron.
Okay, bye...
[Transition]
Do you want to build a portal gun?
Or ride management rails around the halls?
It gets a little tiresome, all these transport tubes
Just watching the cubes go by...
[More Transition]
GLaDOS!
I know you're in there
Chell is asking where you've been
She says be tenacious, and I'm trying to
I'm waiting for you to let me in....
Do you want to build a portal gun...?