Chocolate Shake

Have had a nasty fantasy for a long time and figured this is a safe place to tell it.
Would like to have my delicious wife bent over with her hands on my thighs and a fellow with a long but thin dick fuck her in her arse.
Want to kiss her and watch her face as that thing glides deep in her bum and when he's done he'll pull out kind of quickly and make her yelp.
He'd put her on her back and whilst he's eating her pussy, I'd clean the streaks and assjuice off his cummy cock.
There's probably no way this will ever happen but it still gets me off sometimes thinking about it and having a wank.