Once many many years ago, mmm could be before 2000, a friend of mine and I went to a place in Philly, they had like a line-up, on Market Street down near University City, I can't recall the name, it was French name I think. After I selected a cute girl, they all waited for him to pick one, then he explained there would be no other one. The girl we picked was not into it, but then another one jumped on it. Was fun of course, but she asked for what amounted to back then say three tips worth as donation.
To the point about the other monger's intentions, must make it super clear beforehand, else you might be the one getting double-teamed lol