Originally defined specifically for prostitutes and madams in the wild west, but has since spread to apply to all persons selling themselves for money.
For instance,
"That girl was a bonified, first-class tit wiggler."
"I agree good sir, she sold me with her impressive tit wiggling skills"
Boys who enjoy yaoi (a genre in Japan that contains sexual and/or romantic relations between two men); literally translates to "rotten boy"; corresponding female : fujoshi