When Nickelodeon aired "Muppet Babies," they never showed the original ending tags. They always used the same stock ending tag after the credits (which were usually the 1986-1989 credit sequences). Here is what happened in this tag:
The Muppet Babies except for Animal were at a table in a fancy restaurant. A waiter (his head is obscured by one of those big silver platters), says "Dinner is served." He shows them the platter, which is a big blob of dough. The babies say, "Mmmmmm!" But then the blob begins moving and the babies panic. The blob opens to reveal Animal, who says "Go bye-bye! Yababababababa!"