The original catchphrase was "Kiss My Honeydew"

https://www.youtube.com/watch?v=-9OwGqSK47g

Its pretty cool that the diner changed its name to match the TV show. Pretty brilliant. But this was the days before the internet so few people knew about it or where it was. Could you imagine a hit tv show today doing the same thing. That diner would be exploding on social media with endless selfies.