Bernadette: I don't when I became the mother to three lazy teenagers, but it stops today. You guys are cleaning the kitchen top to bottom.
Raj: Hey, I don't even live here!
Bernadette: Yes or no, do you have clothes in my laundry right now?

Hey, look at that! You both believe in Jewish bearded guys!

Penny

My mother's been there for every award I’ve won since I beat out my twin sister for the did it on the potty trophy.

Sheldon

No need to. As soon as she flies into California air space, I'll feel a disturbance in the force.

Leonard

Sheldon: Won't that void the warranty?
Howard: Sheldon, I have a masters degree in engineering. I wipe my bottom with warranties. Except for Apple Care. That pays for itself in the long run.

All I see is a black screen. And my own reflection. I look sad.

Sheldon

Penny: Think we'll have time to visit your mom while we're there?
Leonard: Yes. We'll also have time to put my junk in a garlic press, but I'm not doing that either.

Sheldon: Aren't you afraid of being blinded?
Leonard: How would I be blinded?
Sheldon: At the end of the ceremony, all the students throw those pointy hats in the air. It's all pomp and circumstance until someone loses an eye.

Bernadette: Howard, you're grown men. You guys don't have to do everything together.
Howard: I know, that's why I'm spending tonight with you.

Penny: [knock, knock, knock] Sheldon! [knock, knock, knock] Sheldon! [knock, knock, knock] Sheldon!
Sheldon: I bet that started off as a joke, but by the third one, you realized there was something strangely enjoyable about it.
Penny: Yeah, I kind of want to do it again.
Sheldon: I don't recommend it, you'll be doing it the rest of your life.

Just this morning, Sheldon wouldn't let me put almond milk in my Grape Nuts because he said it was a theoretical nut conflict.

Leonard

Sheldon: [singing] The itsy bitsy spider is not an insect at all. Because it has eight legs and two body parts.
Leonard: That’s pretty cool, Sheldon.
Sheldon: Thank you. Do either of you know Beyonce? I’d love her to get behind it.

TBBT Quotes

I just gave you my virginity, woman. Cool your jets!

Sheldon

Penny: Hey, Sheldon, did you change your Wi-Fi password again?
Sheldon: Yes, it's "Penny, get your own Wi-Fi." No spaces.