Dr Ray Stantz: Gozer the Gozerian... good evening. As a duly designated representative of the City, County and State of New York, I order you to cease any and all supernatural activity and return forthwith to your place of origin or to the nearest convenient parallel dimension.
Dr. Peter Venkman: [Sarcastically] That oughta do it. Thanks very much, Ray.
Dr Ray Stantz: Where do these stairs go?
Dr. Peter Venkman: They go up.
Dr Ray Stantz: Listen! Do you smell something?
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 Ray Stantz: Total protonic reversal.
Dr. Peter Venkman: Right. That's bad. Okay. All right. Important safety tip. Thanks, Egon.
Dr. Peter Venkman: Mother pus bucket.
Yes, I love Ghostbusters.