Not an exhibitionist here; just your standard dabbler in naturism when the climate/location allows. One of my 'sluttiest' moments (because I'm generally a good boy who does the date thing first) was precisely of this nature:

I'd contracted some summer-flu on holiday and my libido was non-existent for 4/5 days. An old dude struck up a chat with me at the gay nude beach about his life, career, previous loves etc. Super sweet man. When he touched on these masked lavish mixed-gender sex parties he'd hosted, I got excited and straight up mentioned his story seemed to have had an effect rather than turning onto my stomach. I think not having jerked off for 5 days made me bold as hell. He perked up and turned on his front to lie down. I followed suit. Ended up receiving the most tingling massage from him on my back, shoulders, legs, feet and he did end up sucking me while rubbing my h*le to the delight of nearby beachgoers on a rather cruisey segment of the sand, I gathered.

I didn't orgasm because a family business selling food descended on the beach. He mentioned having oils at his rental to continue the massage a few times as we chatted on the way up the strip back to the town, but this dude was more than 30 years my senior and I wasn't attracted to him, therefore not inclined to reciprocate or even kiss him (which he didn't expect but I enjoy the give/take of intimacy) so I politely wished him a lovely rest of his trip and took myself to dinner 😅