Part of the lyrics refer to dancing with a girl with a hole in her stocking. I doubt if a prostitute would have a hole in her stocking.
Also, about 50 years ago there was a weekly animated cartoon TV show about Alvin and the Chimpmunks. One episode feature Buffalo Bill--or someone who resembled him--longing for an old girlfriend, and he sang with song, "Buffalo Gals," only he called in "Buffalo Gal." Well, the Chimpmunks sing this song on TV, and the old sweetheart is watching as they show a picture of her. She rushes to the TV station and meets Bill who exclaims, "You've changed." She talks in a coarser voice and has gained weight.
No doubt, this was a children's presentation of the song.