Why is the key always confidence? How come it's never love handles and flop sweat?

Check it out. You can wear yours and we can have little sword fights whenever we want.

My dad says it's because the sound of my mom's voice makes him want to tear his ears off and sew them over his eyes so he never has to look at her again.

Howard: Can you imagine seeing someone all day long and then you're supposed to hang out with them after work, too?
Raj: Hold on. We do that all the time. You and I work together and play together.
Howard: Yeah, I know, and it drove me into the arms of another woman.

Raj: I think it could be romantic. You know, my parents met at his place of work.
Leonard: Your father's a gynecologist.
Raj: I know. What started as a pap smear turned into a date, which turned into her working there, which turned into marriage, which turned into hatred which continues to this day.

Howard: Wait. Wait. If it wasn't for Indiana Jones, the ark would never have ended up at the warehouse!
Sheldon: (gasps) That's true! He collected and delivered the ark to the proper authorities for filing.
Raj: Like a hero.
All: Yeah! Right! Yes!
Leonard: Although, technically, Indy was supposed to take the ark to a museum to be studied. He couldn't even get that done.
All: Aww.

Raj: Wait. How can anyone ruin Raiders? It's perfect.
Sheldon: Yeah, except for the fact that Indiana Jones is completely irrelevant to the story. With or without him the Nazi's find the ark, open it and die.

Raj: I didn't want anyone to feel bad at the end of the game. Some of those puzzles were really hard. I didn't know who was going to get Penny.
Penny: Run.
Raj: That came out wrong. But you have to admit you had a wonderful time.
Penny: Run to India.

So if you want to solve the mystery of who stabbed Koothrappali in the back with the weapon of indifference, it was all of you.

Howard: No, I am definitely up a cup size.
Raj: You, know, b-but they're very firm, so you've got that going for you.
Howard: You think?
Raj: Yeah. Yeah. Yeah. Very perky.
Howard: Thank you. I really needed to hear that today.

Jump up and down -- let's see if they jigggle

Raj: Why are you on a diet?
Howard: I've put on a couple pounds. I buy these pants in the men's section.
Raj: Well, we've all seen your mom. That Butterball turkey was bound to come home to roost.

TBBT Quotes

Howard: Attention people of Earth: Tonight, there will be two moons in the sky.

Sheldon: Why do you have the Chinese character for "soup" tattooed on your right buttock?
Penny: It's not "soup," it's "courage."
Sheldon: No it isn't. But I suppose it does take courage to demonstrate that kind of commitment to soup.
Penny: How'd you see it? You said you wouldn't look.
Sheldon: Sorry. As I told you, the hero always peeks.