A Whole Lotta Yeah, Uh-huh
And now, these messages...
That meant the show was over. Each commercial break before began with, "We'll return after these messages..." When you heard the, "And now" part, you knew it was almost over; nothing left but the credits.
But you stayed for that, too... that and the closing credit theme. Usually, some sort of remix of the opening credit theme. Sometimes, like WKPR, it was a completely different song. Or something.