Howard: Oh, I should've brought peanuts.
Sheldon: You can't eat peanuts. You're allergic. If you die, who's going to drive me home?
Howard: I'm not gonna eat them. It's a thing they do at JPL. When the Ranger mission finally had a successful launch, there were peanuts in the room. Ever since then, they have them at every launch.
Sheldon: That sounds like a silly superstition.
Howard: It's more of a tradition.
Sheldon: Oh! I do love a tradition. Could you pull over at the next peanut store?
Howard: I don't think that's a real thing.
Sheldon: Oh, don't be pedantic. Any nut store will do.
Howard: I don't think we can get peanuts out here.
Sheldon: Ah, well, then this whole day's ruined.
Howard: Now that I think about it, maybe it is more of a superstition.
Sheldon: Whew! That was close.