Rough Skin

Recently, my neighbors came over for a cookout. Casual conversation sooner turned to weird habits. I made a joke that my wife loved popping zits and blackheads and all that stuff; and she makes me watch that Dr. pimple popper show on TV. We all had a laugh about it. The neighbor guy then said his wife was obsessed with rough and wrinkly skin. She chimed in and said she's always had this tactile thing with skin. The rough skin on elbows, calloused hands and feet, and she really loves how skin wrinkles after being in the bath or pool for too long. Again, we all had a nice laugh, never judged, just enjoyed these tidbits of info. As the evening went on the neighbor guy had to go pick up their kids and my wife went in to start cleaning the dinner dishes. After a bit of silence, she asked me if I thought the rough skin thing was weird. I said I didn't mind it and that I like the little exentricities that make us human. She stood up suddenly and sat close to me on the bench I was sitting on, and in a low voice, she whispered the her favorite skin was ball skin. I was a bit taken back, wiggled in my seat a little. And I admit, my little guy started to wake up down there. I gave and innocent chuckle and just replied " oh, really?". She turned from side to side, checking for onlookers and said "yes, really" and in one fluid movement slid her hand up the leg of my shorts. She never grabbed my penis, but she caressed my nutsack for what felt like eternity. My wife was right inside!! Obviously I was getting hard and I asked her to stop, and she did. She whispered you have great balls, then casually went inside to help my wife. I was left sitting there, frozen, bulge in my shorts wondering "what the hell?"
We've all hung out after that, and will again I'm sure. I feel rather bad because I want her to touch me again... And maybe more.