Raj: Oh, uh, come in, come in. Oh, I, uh, I didn't think I was going to get to see you until tomorrow.
Howard: Yeah, well, Bernadette's a little under the weather and my mom's kind of under my dentist.
Raj: Wait, your, your mother is sleeping with your dentist?
Howard: Former dentist. I need a new one now that I know where his hands have been.

Raj: So you're wandering all around by yourself? That's not the kind of hero's welcome an astronaut should come home to.
Howard: It's okay. You know, we space cowboys don't do what we do for glory and fame. We leave that to your rock stars and your athletes and your Howie Mandels.

Sheldon: Oh, ow, blueberry in my nose, blueberry in my nose!
Leonard: Snort it down and keep eating!