It's pretty much impossible to prove you wrong, however I don't see proof "For a good time ..." is an urban legend either. Just saying because very few other website indicate positively "For a good time ..." is just an urban legend.

TServo2049 said:

Right - Betty Boop's nipples were caught before any of the video releases.

The "For a good time" graffiti is in every version. It's the flash frame of Michael Eisner's phone number that isn't on any of them - because that never actually existed. (That's an urban legend going back to the days of Usenet.)