From The Betrayal
[Setting: Jerry's room in India. Notice: "THE NIGHT BEFORE, BACK IN INDIA" (Elaine is obviously drunk)]
ELAINE: George knows that you slept with Nina. That's why he was acting so weird.
JERRY: How did he find out?
ELAINE: He schnapped me.
JERRY: You know you're not supposed to drink while you're keeping a secret! (Elaine laughs) Is there anything else?
ELAINE: I can't tell you.
JERRY: (Handing her a small bottle of wetbar schnapps) Here, drink this.
ELAINE: Okay. (Takes a drink) I slept with the groom...
It wasn't a spoof. I watch Imus every morning on MSNBC and it was the real thing. However, Imus frequently says to his guests "What are you, drunk"? Gregory was either drunk or extremely tired, I never heard him like that before.