taz_sub: 
Paying a hooker to go down on her with no intercourse involved and knowing that she has been with 4 or 5 clients who fucked her before him. If she is willing to verbaly humiliate him even better.. 
yes.  you may have something there.  i know this black guy and we have been exchanging texts and emails for several years about him fucking my wife - we cant seem to get everybody in the right place at the right time.  mauybe he would condsider fucking a prostitute i pay for - and while he fucks her - i could role play and jack off and pretent he is fucking my wife.  its close enough to be good.  plus i oculd suck his cock and lick her pussy after he fucks her.  it could work!