Getting Ahead From Behind

My sexy wife has been the company whore for a little over a year and between the sex and the bucks, it's a win win situation.
She's always been very into oral, giving even more than receiving. She just loves to suck cock. Loves feeling them get hard in her mouth. Loves being used and degraded. Makes her pussy gush to be treated like a fuck doll.
I have a very strong cuckold fetish and love to imagine my wife on her knees with a handful of randy throbbing juicy cocks waiting for her throat to take their loads. She always swallows too and it makes me so hot when she comes home and kisses me and tells me she's walking around with x number of loads in her tummy. Her cock scented kisses and her creampies are delicious and satisfying.
Her boss is hinting hard that he's going to fuck her ass, if in fact he hasn't already done it.
She told me that I'll never fuck her butt and that it belongs to her boss and his associates.
I'm hard right now thinking about soothing her raw red asshole with my tongue and drinking her chocolate milk shake.