Penzance, 1995 - DH and I were on a camping holiday. We had a great pitch in a secluded area of the campsite. A couple of days later, two couples arrived, set up their tent. A large tent that they were all sharing.
The women were dressed very provocatively, totally the opposite of outdoor/camping attire which looked a bit odd for the surroundings, but whatever floats your boat.
Late evening, as darkness fell, they got a bit louder, saying things like 'ooooohhhh, yes, yes', followed by lots of giggling. Then the women would loudly repeatedly say 'cockle doodle do' and 'ding dong' in a drawn out, faux sexy twang.
The 'ding dooonnnnnggggg' would be followed by 'sex noises'.
We lay in our tent trying to stifle laughter, but didn't succeed. It was hilarious the first night, but wore a bit thin the second and third night so we packed up and went to another site.
About a decade later, we saw them in Sainsburys some 250 miles from Penzance. That was weird!