Aww FFS! Are you asking for someone to lick your arse clean? Sorry that's nasty. I'm sure there are some escorts who offer rimming but that is generally only offered providing you've bothered to wash yourself properly but asking someone to lick you clean may be more difficult. Each to their own but I think that's pure disrespectful expecting someone to lick your arse clean with their tongue. That's a disease waiting to happen with that nasty things you can catch from shit! I feel sick! Not sure I can see anyone genuinely enjoying that unless they are forced into it or completely desperate.
Or did you mean you want to rim the escort?