My first time was with my ex-wife. We had talked for years, during sex, about her fucking someone else. I would often tell her I wanted to lick cum out of her pussy and that got us both hot as hell. During sex, she'd often play with my cock and balls with her hand, then cup her hand over my face to give me a whiff of the scent of dick on her fingers. Somehow she understood how sexy that was and it really turned me on when she did that.
When she finally did it one night, it was even hotter than we'd imagined and the three of us literally fucked all night. We kept getting and staying hard after orgasm, a testimony to the powerful effect of this.
When the time came to leave his hotel room, he wanted to fuck her one last time, and she gave it to him. As he fucked her, it occurred to me that this might not happen again soon, if ever. So if I was going to make good on my talk about eating cum out of her, now was the time. However, now faced with the prospect in the real world, I found it off-putting.
Nonetheless, I thought if I didn't do it, our future sex play talk about me doing it would ring hollow. Ah, WTF. I decided to just hold my breath and kind of play at licking it, just to say I had.
As soon as he pulled his dick out of her cummy pussy, she moved to get up, so I quickly stopped her. She looked at me puzzled, but I quickly made my intentions clear as I pulled her legs open and moved to here pussy. She gasped. She was truly shocked, and didn't think I really would.
I began to touch my tongue gingerly to her pussy, mainly on her clit, so she'd feel it. I figured to do that for a bit and then we'd call it a night. But she immediately became hugely aroused, moaning and bucking her hips and began to push my head down. The effect of her response was to totally turn me on again, and I began to venture further down, tonguing between her cunt lips, where the taste, scent, and feel of another man's cum was unmistakeable.
To my surprise, my hesitancy suddenly vanished and in short order, I was digging into her hole with my tongue, gripping her ass cheeks to give my mouth better purchase. She had one of her most intense orgasms of the night, which was saying something.
By the time we made it home, I was hot again and wanted to taste her cummy pussy again, even though it was mostly gone by now. I licked her to another orgasm, and then fucked another load into her. We fell asleep exhausted, but I kept waking up with a raging hard-on and would go right down on her again. Although the cum I was tasting now was mainly my own, it triggered my memory of earlier events and I'd eat it out of her hungrily, then fuck her again. Then ...... a few hours and repeat, until her pussy was too sore for another go.
My advise to anyone hesitant to try it is to do as I did, and just play at trying it. For your wife's sake, if nothing else. You might be surprised at how hot it is!