Episode From Seinfeld:
ELAINE: I know, I know. I'm sorry I'm late.
JERRY: No problem.
ELAINE: I dropped a grape.
ELAINE: I dropped a grape in the kitchen and it disappeared. I couldn't find it. I was... I was literally on my knees for ten minutes looking for this stupid grape. I have no idea where it went.
JERRY: Were you crying? I mean, it's just a grape. You'll find it.
ELAINE: No, I'm just getting over an allergy attack. This guy I'm going out with has two cats and I'm allergic to them. You know, I finally meet a normal man, and I can't even go into his apartment, you know. He won't even go away for the weekend because of these cats.
GEORGE: Guys with cats.. I don't know.
(A few scenes later...)
JERRY: Is that still from the cats?
ELAINE: No, I just have a cold.
JERRY: So, what ever happened with that?
ELAINE: I gave him an ultimatum. (Shrugs)
GEORGE: He chose the cats?
ELAINE: They're very clean animals.
JERRY: I gotta say, that's pretty sad. Losing out to a cat.
They really are very clean animals... :)