The other side of the fish painting is a realty sign. The middle digit of the telephone number's prefix is blotted out (4*4) to prevent from accidentally using a real phone number, instead of the now common practice of using the 555 prefix.
The title refers to a go-go that was a dance club for young adults in the 1960's where women wore skimpy costumes and danced inside cages.
Alan Reed Jr. is made up and costumed to look like Bob Denver's "Dobie Gillis" character Maynard G. Krebs, whose beatnik slang was also difficult for others to understand.