Or it's a reference to a real life marketing campaign that was referenced in that movie? [Edit] So I googled. Never realized that message was never a real sec

Or it's a reference to a real life marketing campaign that was referenced in that movie? [Edit] So I googled. Never realized that message was never a real secret code from the radio show. Sponsored by Ovaltine but apparently the creators deny having put ads in the secret messages as the movie claimed.