If the customer allows the dancer to start in the middle of a song, he should pay her for a full song. I don't usually mind if it's just a few seconds into the song, especially if she's been fooling around with me for a few minutes already. Much later, though, and I'll say something.
JS69's story reminds me of a rare ripoff attempt I went through a few months ago at my regular club. A stripper I'd gotten dances with two or three times before approached me just as a song was starting. As usual, we soon started groping each, and she started getting naked. Just to be sure, I said something like, "You're just getting me warmed up, right?" She agreed, even though we were already in full dance mode.
After the first song was underway, though, her dance wasn't as good as on previous days. I'd always gotten two dances with her before, but this time I stopped her after one. When I slipped a ten into her garter, she said I owed her $20 for two dances. I said no, it was just one, that she had said that first half song wouldn't count. She claimed she wasn't counting that. I named the song she started on, which just finished. She didn't have an answer except to insist that she had done two dances. I didn't budge, and she got up and left.
I thought that was the end of it, but a minute later, I saw her talking to a bouncer over near the entry and pointing in my direction. The two of them came over, and the bouncer started talking to the guy at the next table. The dancer told him no not that guy, this guy, pointing at me. The bouncer, who knows me as a regular, said this guy?? No way, he's here all the time, never been a problem. I said to him that this lady apparently can't count to two. She was still mad, so the bouncer pulled a ten out of his pocket and gave her what she claimed she was owed just to shut her up.
Later that day, I stuck a five into his shirt pocket and thanked him for getting her out of my hair, even though she didn't deserve the cost. I said how stupid does a dancer have to be to piss off a customer over $10? He laughed and shook his head. I think she was just offended that I stopped her after one dance.
A few weeks later, one of my faves said that the bitch had said to her, "You know that guy you've been sitting with? He ripped me off on some dances I did with him." My fave told her she didn't believe I would do that. I was kind of surprised the bitch lasted that long at the club, but I haven't seen her around anymore lately.