Examples

Leonard: There you go, Pad Thai, no peanuts.
Howard: But does it have peanut oil?
Leonard: Uh, I’m not sure, everyone keep an eye on Howard in case he starts to swell up.
…
Howard: Do I look puffy? I feel puffy.
Penny: Hey Leonard.
Leonard: Oh, hi Penny.
Penny: Am I interrupting.
Leonard: No.
Sheldon (off): You’re not swelling, Howard.
Howard (off): No, no, look at my fingers, they’re like Vienna sausages.