on the bug

[Paul Frank]

What does "on the bug" mean? An English-Chinese translator wants to know, and I don't know the answer.

" They went down to Madame Reba's Palace of Sweet
Pleasure. And father, this is sure one bad, wicked
place. [They got a man sells tickets on the bug] -but
they also got these strutting, bad-blood, tail-shaking
nigger girls."

Paul
_________________________
Paul Frank
Chinese-English translator
Huemoz, Vaud, Switzerland
paulfrank at post.harvard.edu