Season 7, Episode 11: "The Rye"

The rooster goes with the chicken.

So who's having sex with the hen?

-We'll talk about it another time. -But you see my point here?

You only hear of a hen, a rooster and a chicken.

-Something's missing! -Something's missing, all right.

They're all chickens.

The rooster has sex with all of them.

-That's perverse. -So has anybody seen Firestorm?