Stantz:
I couldn't help it. It just popped in there.
Venkman:
What? What "just popped in there?"
Stantz:
I- I- I tried to think...
Stantz:
No! It can't be!
Venkman:
What is it?
Stantz:
It can't be!
Venkman:
What did you do, Ray?!
Stantz:
It's the Stay-Puft Marshmallow Man.