Sort of... not for actual payment of a debt, but KK's used her sexuality to manipulate men into favors, or avoid things. On two occasions I know of, KK used sex to get out of being issued speeding tickets - one was exchanging a handjob in lieu of the ticket, the second event a blowjob to avoid the ticket.
KK is a professional photographer, works as essentially an independent contractor, common in her profession. One of the editors KK works with from time to time is also a "victim." KK manipulates him sexually for her own gain, airfare offsets, certain gigs, increases in travel per diem, etc. Over time, her manipulation has ranged from teasing and flirting, to handjobs, blowjobs, and penetrating sex. She leads the guy to believe its all cheating, and that I'm not aware of their occasional dalliances. He's very much a premature ejaculator - their most frequent encounters start with mutual masturbation, with him blowing his load all over KK after just a few minutes of stroking. She has absolutely zero respect for him, and shares the details of every moment of his embarrassment with me after the fact.