Dr. Egon Spengler:
There's something very important I forgot to tell you.

Dr. Peter Venkman:
What?
Dr. Egon Spengler:
Don't cross the streams.

Dr. Peter Venkman:
Why?

Dr. Egon Spengler:
It would be bad.

Dr. Peter Venkman:
I'm fuzzy on the whole good/bad thing. What do you mean "bad"?

Dr. Egon Spengler:
Try to imagine all life as you know it stopping instantaneously, and every molecule in your body exploding at the speed of light.

Dr. Raymond Stantz:
Total protonic reversal!

Dr. Peter Venkman:
Right, that's bad. Okay, alright, important safety tip, thanks Egon.

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