Dr. Egon Spengler: I have a radical idea. The door swings both ways, we could reverse the particle flow through the gate.
Dr. Peter Venkman: How?
Dr. Egon Spengler: [hesitates] We'll cross the streams.
Dr. Peter Venkman: 'Scuse me Egon? You said crossing the streams was bad!
Dr Ray Stantz: Cross the streams...
Dr. Peter Venkman: You're gonna endanger us, you're gonna endanger our client - the nice lady, who paid us in advance, before she became a dog...
Dr. Egon Spengler: Not necessarily. There's definitely a *very slim* chance we'll survive.
[pause while they consider this]
Dr. Peter Venkman: [slaps Ray] I love this plan! I'm excited to be a part of it! LET'S DO IT!