Trip to Yelapa: Attempted drugging?

Boyfriend and I took a trip to Yelapa for a second time. We have felt very safe for the entire trip before this happened. Upon arrival off the water taxi, we are walking past a bunch of local men that are sitting. My boyfriend and I notice one of the men point at us with two fingers and mime a drink/shot motion to another guy. We both notice and continue with the group. When we get to the waterfall, the guide introduces us to the bartender right away. We are friendly but we are more interested in the waterfall. My boyfriend and I are going for a swim and as I am getting out of the water the "bartender" approaches me (and ONLY me, there are 10 other people in our group) and offers me the shadiest shot I've ever seen. "Special for you!" It's yelllow, cloudy, and I can see different colored bits inside (brown, white). We have been offered free shots many times on our trip but this seems incredibly off. He's persistent when I say no and eventually I had to get fairly stern with him. When he realizes I'm not taking that shot. He tries to give it to my boyfriend. This dude literally climbed down a bunch of wet rocks to try to give it to my boyfriend while he's still in the water swimming. I had told the guy "he doesn't want it either" but he just ignored me and tried to give it to him. We didn't see anyone else be offered a shot. Literally no one and there's tons of people around us. We finish up and we are trying to laugh it off and enjoy the rest of the trip but something is really off even when we get down to the beach. The tour guide takes us to a specific bar and One of the bartenders, that wasn't even with us on the waterfall, asked us why we didn't try the moonshine at the waterfall. How did he even know that? We felt really uncomfortable and ended up walking to have a few drinks elsewhere. We have never ever felt like this before in PV or anywhere on our trips. And it felt very much like the tour guide, the bartenders at the beach, etc were in on it. Maybe we got a little paranoid? Who knows but felt like it was worth it to share.