Professor Proton: I'm having trouble with my pacemaker.
Leonard: I'll call for help.
Penny: Any chance we could plug it into the potato?
Professor Proton: No.

Howard: How'd you get him to come to your house?
Sheldon: As Professor Proton always says, there is no problem you can't solve if you use your noggin.
Leonard: And he wrote him a check.
Sheldon: Yeah, that too. A big check.

Sheldon: Professor Proton hosted my favorite science show when I was a child. I never missed an episode. He demonstrated scientific principles using everyday objects.
Leonard: It was pretty cool.
Penny: Aw, it's so cute when you use the word cool wrong. Like when kids say pasgetti.

Sheldon: I wrote a fan letter to you when I was a child in Texas, and you sent this autographed picture back to me. Do you remember that?
Professor Proton: I'll give you a hint. I have a bracelet with my own address on it.

Sheldon: Soft kitty, warm kitty, little ball of fur. Happy kitty, sleepy kitty, purr, purr, purr.
Professor Proton: Thank you, Sheldon. That, that was very nice.
Sheldon: Want me to sing it again?
Professor Proton: No. The fourth, the fourth time was the charm.

Professor Proton: Okay, as, as I put the egg on top, and, and the flame goes out and, and, and the air pressure decreases in, in the flask, what do you think will happen?
Penny: I think I know.
Sheldon: It's gonna get sucked in. It's going to get sucked in.
Penny: Okay, I didn't know.
Sheldon: Yes!
Penny: See, I'm not a scientist like them.
Professor Proton: I, I figured that out.

Bernadette: Can't believe we lost her. What was I thinking? I'd be a terrible mom.
Howard: Well, maybe with the first one. But kids are like pancakes. The first one's always a throwaway.

Penny: But if you dont mind me asking, uh, the potato clock, how does it work? Is it a trick clock or a trick potato?

Professor Proton: Just, just call me Arthur.
Sheldon: Leonard, did you hear that? Professor Proton said I should call him Arthur. That means we're friends. Professor Proton: No, a friend would've told me about the elevator.

Professor Proton: I power a clock with a potato.
Penny: Shut up! You can do that? I mean ... wouldn't that solve the world's energy crisis?
Professor Proton: No.

Raj: Uncle Howard, Cinnamon's here for her sleepover party.
Howard: You know if you had a stroke, she'd eat you, right?
Raj: And it would be my pleasure to be her num-num.

Raj: Hey, I just found out that I have to be at the telescope lab all weekend. Any chance you and Bernadette could take care of my dog?
Howard: Why don't you put her in a kennel?
Raj: Why don't you put your mother in a home?
Howard: To be honest, she'd do better in the kennel.

Professor Proton: Is, uh, is he dangerous?
Leonard: Actually he's a genius.
Sheldon: I am.
Professor Proton: That doesn't answer my question.

Professor Proton: Is the blond girl really your girlfriend?
Leonard: Yes, sir.
Professor Proton: You're the genius.

Howard: When this is all blows over, remember that voice. It's kind of a turn-on.
Bernadette: It turns you on when I sound like Raj?