The misogamist in the bar quotes: "women do get weary wearing that same old shabby dress". Those are approximately the lyrics from the song "Try a Little Tenderness". Its best-known recording may be by Otis Redding in the 1960s, but it was actually written back in 1933 and was recorded by dozens of different singers over the decades, including Bing Crosby and Aretha Franklin.
According to Darrin, his home phone number is 555-7328.
Endora purposely bungles Darrin's name again: Darwin.