(Borrowed from other shows' fora... :) )

Cindy is standing on a chair fixing the curtain when Janet sees her.
Janet: Oh, no! Let me help you.
Cindy: No, Janet, I’ve got it. Let go.
Janet: Cindy, oh, okay, but please be careful.
Cindy: Boy, everybody thinks I’m a klutz, but I’m not. I took these down, vacuumed them and put them back up again without a hitch.
Jack barges in the apartment.
Jack: Hey!
Jack hits the chair Cindy’s standing on. Cindy falls. The curtain falls together with the bookcase and the lamp.
Jack: Cindy, you know, in my book, you’re a perfect 10.
Cindy: Oh!
Jack: On the Richter scale.
Cindy: Come on Jack. That was your fault.
Janet: It was, Jack. You’re the one who opened the door.
Jack: Oh right, I should’ve waited till she tore the door off the hinges.
Jack: Listen, I got some news.
Jack kicks the door shut when was about to enter. Larry screams.
Jack: What was that?
Janet: I think it was Larry.
Jack: Larry?
Jack opens the door.
Larry: I’m getting afraid to come down here without a helmet.

---- Oh no, that's an actual episode!

Mr. Furley is fixing the lamp in the living room when Janet checks on him.
Janet: Okay, Mr. Furley, is it all fixed?
Mr. Furley: Would you mind flipping off that switch while I fix this loose wire?
Janet: Sure. There you go.
Mr. Furley: Okay. Safety first, you know.
Janet: Yeah.
Jack arrives from the gym.
Jack: Oh, hi.
Janet: Hi.
Jack: Hey, Mr. Furley, looks like you need some light.
Jack turns on the light switch.
Janet: No!
Electricity starts buzzing. Mr. Furley yells in pain. Jack hurriedly turns off the switch. Mr. Furley starts squirming from pain.
Jack: Oh, I’m sorry, Mr. Furley, I’m sorry.
Janet: Are you all right?
Mr. Furley: I think he melted my fillings.

---- Oops, that's another episode!

ANSWER: none! They'll NEVER finish changing the lightbulb!

BUT: if anyone can figure it out... Fire away!!!