In the pre-credits sequence, Robin is already in the Batcave with Alfred. However, when the show comes out of the main credits, because of the use of stock footage, Robin slides down the Batpole with Batman.
Shame: Yeah, I gotta hand it to you, Calamity. You're a woman and a half. If you could just get rid of the other half.
Chief O'Hara: They were last seen heading north on the highway in a stolen tank.
Robin: Where in the world did they ever get a tank?
Chief O'Hara: Mad Man Otto's Used Tank Lot. Begorrah, is he mad now.
Commissioner Gordon: They found the tank on West 20th Street.
Batman: Is it still there?
Commissioner Gordon: No, they had towed it away. The parking meter had run out.
Batman: They probably removed the fingerprints as well. I think Mayor Linseed should make some... changes in his towing policy.
Commissioner Gordon: Oh. Tanks in the street, a horse in my outer office. Has the whole world gone batty? (Batman and Robin glare) Ha ha. Just an expression, Batman. No slight intended.
Batman: I understand.
Shame: And then we're going to do something which I like to refer to as The Great Train Robbery.
Fred: That's scarcely original, you know.
Shame: A big mouth is better when it's shut, Fred. So keep your tongue harnessed and you'll have a thin lip.
Fred: I stand chastised.
Narrator: Gotham State Prison, a grim and foreboding edifice. It, like politics, has been the last refuge of many a scoundrel.