LOL! I remember that movie although I never saw it.
the newspaper would have a picture of a frog, nothing more. Next day, same picture and a few words, nothing important. The same for a few days more.
Then, the day came when they had a picture of the frog with an arm sticking out of it’s mouth and the words....”I can’t believe I ate the whole thing!”. Next day was the poster for the movie FROGS.