Before this, I'd had a few guys visit me to find me hooded and blindfolded and have me suck them off (once while I was in chastity, which was my favourite one!) - I took their cum in my mouth, amd swallowed each time.
But my favourite/dirtiest experience was when I had a couple of days away from my wife in a hotel - I felt much more relaxed about having a visitor to a hotel who I wasn't going to see. I found a married older guy on Fabguys who was working nearby.
He came by on his lunchbreak, and let himself into my room where I was waiting on the bed, naked except for my blindfold hood. I'd been plugged for about an hour before he got there, and only realised it was still in when he was on his way up - figured I'd leave it in, and it could be a nice surprise ;)
He entered, and I heard him close the door behind me and strip, then felt his weight join me on the bed. He felt me as I lay on my back, and found my plug. I shuddered as he teased my hole with it.
I knew he wanted to use my mouth to get hard, and was soon doing this, mounting me from above. My plug moved in and out as I gagged on his length, and I loved the feeling of my hole abd throat being stretched at the same time.
He was soon on with a condom (I don't do bareback with strangers), and taking my plug out t9 replace it with his cock. He was only the third guy to fuck me (and the first for about 4 or 5 years), and definitely both the biggest and longest lasting I'd taken.
I loved every second - some small amount of pain, and a couple of occasions where I wasn't sure I could take it, but I loved feeling him slide in and out, and my toes curled as he pumped harder.
When he was ready to cum, he whipped off the condom and went back to my mouth, plunging deep and unloading so that I could swallow it all. He replaced my plug, got dressed, and left.
We never said a word to each other, and never saw each other's faces, which - for me - is just the perfect way to be used.