Text:

Residents of Dallas refer to it as “the Big D.”

Context:

The informant lived in Dallas for 17 years, and grew up knowing this nickname for her hometown.

Interpretation:

Preliminary research points towards this nickname originating from the song with the same name, “Big D” from the 1956 musical The Most Happy Fella. The name popularized when Bing Crosby recorded the song, and stuck when a columnist at Dallas Morning News titled his column “Big D.” Since then, residents of Dallas have continued to call their city “the Big D” without necessarily knowing the origin of the nickname.

The longevity of the nickname may be more due to its function as a double entendre than the timelessness origins. Though the nickname remains the same, the meaning behind it changes, so that new generations believe their hometown nickname is unironically an epithet for genitalia.