Sheldon: Ignore them, Amy. They're just jealous because they'll never have a relationship as good as ours.
Penny: Isn't this when he says "bazooka" or something?

Sheldon: You know, I've always wanted to go to a goth nightclub.
Howard: Really?
Sheldon: Bazinga! You never see any of my practical jokes coming, do you?

Sheldon: Leonard, you may be right. It appears that Penny secretly wants you in her life in a very intimate and carnal fashion.
Leonard: You really think so?
Sheldon: Of course not. Even in my sleep-deprived state, I've managed to pull off another one of my classic pranks. Bazinga!

Howard: I have a two-part question.
Sheldon: Go ahead.
Howard: A: Are you kidding? And B: Seriously, are you freaking kidding me?
Sheldon: A: I rarely kid, and B: when I do kid, you will know it by my use of the word "Bazinga".
Howard: So you're saying the two of you are going to be sleeping in the same bed?
Sheldon: Yes. Bazinga.

Sheldon: [jumps out of the sofa] Bazinga, punk. Now we're even!

Sheldon: And you can start sorting protons and neutrons while I build carbon atoms!
Leonard: No, I don't think so. We need to go home now.
Sheldon: But I'm still working!
Leonard: If you don't come out of there, I'm gonna have to drag you out.
Sheldon: You can try, but you'll never catch me.
Leonard: Oh for God's sake. Sheldon, come here.
Sheldon: Bazinga!

Sheldon: I should've brought an umbrella.
Leonard: What for? It's not going to rain.
Sheldon: I know that, but with skin as fair as mine, moon burn is a real possibility.
Howard: That's a bazinga, right?
Sheldon: One of my best, don't you think?

Amy: That's fascinating. I can't wait to read it.
Sheldon: Oh, me as well. Please email it to [email protected] Why .biz? Because I just gave you the business. And also bazinga.com was taken.

Sheldon: Why did the chicken cross the Mobius Strip? To get to the same side. Bazinga!

Bernadette: How about something a little more realistic?
Sheldon: Well, Amy enjoys knitting her own sweaters, so I was thinking of getting her an all expenses-paid trip to the Wisconsin Sheep and Wool Festival.
Penny: (Silence) Sorry, I was waiting for the Bazinga!

Sheldon: Howard?
Howard: Yeah?
Sheldon: Your shoes are delightful, where did you get them?
Howard: What?
Sheldon: Bazinga! I don't care.

Sheldon: As is the tradition, I have prepared a series of disrespectful jokes which generate humor at Howard's expense. Prepare to have your ribs tickled.
Howard, I always thought you'd be the last one of us to ever get married, because you are so short and unappealing. Am I right?
Let's see here. Oh, seriously though, Howard, you're actually one of the most intelligent people I know. And that's a zinger, because you're not.
I've always thought that you'd make someone a fine husband someday. Assuming you'd be able to get the parts, and develop the engineering skills to assemble them, which I don't see as likely. Ha-cha!
Okay, let me see here. Okay, kidding aside, Howard, you are a good friend. And I wish you nothing but happiness. Bazinga, I don't!
Leonard: Sheldon...
Sheldon: Double-zinga! I do!
Good luck following that.

Sheldon: Oh, boy.
Leonard: What?
Sheldon: I can't comment without violating our agreement that I don't criticize your work.
Leonard: Then what was "Oh, boy"?
Sheldon: Great restraint on my part.
Leonard: There's nothing wrong with the science here.
Sheldon: Perhaps you mean a different thing than I do when you say science.
Leonard: [makes a change] Okay, how's that?
Sheldon: You actually had it right in the first place. Once again, you've fallen for one of my classic pranks. Bazinga!

Tam: Sheldon, come here.
Sheldon: Bazinga!

Sheldon: Amy, I find myself wondering if we should actually engage in coitus at least one time in our relationship. Bazinga! Bedtime. Please show yourself out.

Sheldon: [through virtual presence device] This is a photograph of the 1911 Solvay Conference on the theory of radiation and quanta. Using Photoshop, I've introduced a few anachronisms. See if you can spot all 24. I'll give you the first one. Madame Curie should not be wearing a digital watch. And go.
Leonard: That’s it. Bye-bye. [turns off screen]
Sheldon: [screen turns on] Bazinga.
Leonard: Whoa! [car swerves]
Sheldon: I have an override switch.
Leonard: I almost died!
Sheldon: And I'm safe and sound in bed. Who's crazy now?
Leonard: I'm still going to go with you.

Sheldon: Did you bring the dehydrated low-sodium soy sauce?
Leonard: Check.
Sheldon: Freeze-dried spicy mustard?
Leonard: Check.
Sheldon: Flash-frozen brown rice, not white?
Leonard: Uh, oh, sorry.
Sheldon: Not to worry. I hid it. Bazinga!

Leonard: What could she possibly be talking about for so long?
Sheldon: Obviously, waitressing at the Cheesecake Factory is a complex socioeconomic activity, that requires a great deal of analysis and planning. Bazinga!

Sheldon: There's just no pleasing you, is there, Leonard? You weren't happy with my previous approach to dealing with her, so I decided to employ operant conditioning techniques, building on the work of Thorndike and B.F. Skinner. By this time next week, I believe I can have her jumping out of a pool, balancing a beach ball on her nose.
Leonard: No, this has to stop now.
Sheldon: I'm not suggesting we really make her jump out of a pool. I thought the Bazinga! was implied.

Sheldon: I'm sorry, I believe you've misunderstood. I'm not giving you the job. I'm simply affording you the opportunity to apply for it. Have a seat, we'll get started with the interview.
Raj: Wha... you're kidding!
Sheldon: Please.
Raj: All right.
Sheldon: So, that's what you wear to an interview?
Raj: Come on, dude, we've been friends for years.
Sheldon: Oh, pulling strings, are we?
Raj: Sheldon, for God's sakes, don't make me beg.
Sheldon: Bazinga! You've fallen victim to another one of my classic practical jokes. I'm your boss now. You may want to laugh at that.

Raj: I think back to all the good times we had, like, uh, when we went camping and spent that night telling each other all our secrets. I told him I'm addicted to pedicures and he told me he lost his virginity to his cousin.
Howard: She was my second cousin.
Sheldon: And the first woman you ever disappointed sexually. Ba-da-bazinga!
Raj: Oh, oh, yeah, and then there was the time when Leonard and I took Howard to Las Vegas and paid a hooker to pretend she was Jewish and that she wanted his little kosher pickle. Of all the Howard humping hookers stories, that one's my favorite!

Penny: So, how you been?
Sheldon: Well, my existence is a continuum, so I've been what I am at each point in the implied time period.
Penny: You're just coitusing with me, aren't you?
Sheldon: Bazinga!