In Ghostbusters (1984) when Gozer asks the 'busters to
"choose and perish"
Venkman clarifies by saying
If we think of J. Edgar Hoover... .J. Edgar Hoover will appear and destroy us
... so why does the Stay Puft Marshmallow Man appear instead of J. Edgar? I know Ray thinks of Stay Puft but Venkman must have thought of J. Edgar first in order to mention him.
I don't think Gozer would allow a freebie to allow you to understand the question!