For some people it is given as a "reward" but for some people saying something like "you are not getting any" often means that you have just upset me, put me out of the mood to be intimate with you. There might be better ways to express your displeasure with someone, but saying that does send a clear message.

I used to date a woman who would say "you just lost points" when I said/did something she didn't like. But she would also say "oh, you just scored some points" not a guarantee of upcoming sex, but did let me know that she appreciated my words/actions.