New entertainment?

Not so long ago I saw a strange picture on the street.
One teenager leads the arm of another. At first glance - what's so strange about that?
Well maybe the blind?
I also thought so and politely gave way to them. But after a few minutes, the situation repeated itself, but with a different couple, going from a completely different direction.
Two girls and one leads the other.
Just like in the first case, the eyes are closed, the walk is not clear, not familiar to the blind.
At first I was very surprised, but then I remembered: this is a new hobby of teenagers.
The bottom line is:
- the first participant comes to a pre-arranged place (we have a beach at the sea) and time.
gets comfortable and blindfolded or just closes them - this is a mandatory rule.
- the second participant comes in half an hour and finds a sort of people ready for communication.
comes up to anyone and starts a conversation, or touches the parts of the body of the first participant

You can walk, talk, etc. - time is not limited, but it all happens within an hour.
Then the second participant leaves, dissolves in a stream of people, as it were, and then the first opens his eyes.

Complete anonymity and emancipation.
')
Well, something like this.