[flashback:]
Shawn: I understand that you need the four humans to think they're in the Good Place, but using an actual Good Place Janet seems risky. Why don't you just have a Bad Place Janet pretend to be good?
Michael: I thought about it, but... watch. Bad Janet?
Bad Janet: [appears] What up, skidmarks?
Michael: Let's try that thing again where you pretend to be a Good Janet, okay?
Bad Janet: Aww.
Michael: Now, really... really try your best.
Bad Janet: Fine.
Michael: Say, Janet, where can I get some delicious ice cream?
Bad Janet: Oh, there's a wonderful parlor in the middle of town square. My favorite flavor is rocky road. It contains chocolate ribbon, marshmallows, and your... dad's salty nuts, you fat dink! [face melts]
Shawn: I see what you mean. Use the good one.