When I was 21, in the in-between period after college in the summer while I was waiting for my job to start in Japan, I stayed at my mom's campground and helped around the place, cleaning, fixing stuff, etc. It was a so-so summer and there weren't many people there, except for a few long-termers and a young couple staying on for a few weeks. They were close to my age, maybe 25 or so and I'd chatted with both a few times and we'd all gone to the local bar once (not much to do in the boonies but go there, really). There was no one else there even remotely close to my age, so it was nice to have them around. One evening after picking up the bins they invited me to join them in their mini-BBQ and beers by their trailer, so I cleaned up came back and had a beer with them by the fire. We chatted and everything was normal until the guy suddenly said,
"You may have heard the the rumors about us around."
I assured them that I didn't listen to rumors and that they'd been model campers and everything was cool, and the girl chimes in,
"Well, they're true. It's just a bit of fun."
I hadn't actually heard any rumors at all, so my inexperienced little brain is wandering to what kind of camping shenanigans they could be getting into that might be 'a bit of fun', but my thoughts are all in the pranks/hunting/smoking pot range, so trying to be diplomatic I just say that everyone's entitled to a bit of fun now and then or something like that. They were customers, after all, and my mom really needed their business.
The girl then got up and sat on my lap and the guy pulled his chair close. Everyone's a bit tipsy, so I thought they were just being silly until the girl started playing with my hair and the guy leaned in close and whispered that I was welcome to 'join them.'
My first thought was to say that I didn't want to get into any trouble before I left the country, but then he started stroking my arm and I had an ah-ha moment finally, followed by a profound feeling of embarrassment. I thanked them for the beer and managed to extricate myself and decided I'd go back to being a trail guide rather than show my face at the campground during the day ever again.
tl;dr - Naive younger self can't take a hint until cornered by swinging campers.