Not sure I could put it better myself (from www.wwtdd.com):

"The clip ends right after that, so we never hear McCains full answer, but of course he wants slavery to return. He’s a Republican. And if Obama wins, gay men will be able to force their penises into my mouth and anus anytime they like. Gays will be above the law, no rules, there would be nothing I could do about it. Because that’s how it works. Any asinine extreme you can think up, that’s what the candidate you don't like believes, and wants. Just ask Whoopi."

Whoopi had a fair point there, actually. The Founding Fathers understood the Constitution to allow slavery. Article 1, Section 2 of the Constitution stipulates that slaves count as three-fifths of a free person for apportioning congressional representation. A really strict originalist interpretation would allow for slavery.

Of course, McCain's response should have been, "That's why we have amendments." Slavery is outlawed in the US under the 13th amendment.

Also, you don't have to be anti-abortion to oppose Roe v. Wade. Whatever your opinion on abortion is--I'm very staunchly pro-choice myself--but I can recognize that Roe v. Wade was a poor decision. It stands on extremely shaky legal grounds, uses sloppy reasoning, and more or less invents new rights whole cloth and labels them "constitutional." I would support a Constitutional amendment enshrining abortion rights up through the second trimester in a heartbeat, but Roe v. Wade just... isn't very good.

Whoopi is abortion-proof but far from idiot-proof.

How did McCain know she was going to say that! His natural impulse would be to become enraged but he didn't skip a beat. This must have come up before somehow.

You're assuming McCain's heart is beating. When was the last time he had the energy to get excited about anything?