@sozobe,
Just heard this one, wanted to write it down before I forget...
Sozlet was talking about how "jinx" works, and reminded me that in addition to "12345678910 you owe me a coke!" the other person (jinxee) can't talk until the jinxer has said the jinxee's name.
Then she told me about something that happened today. She walked into class from elsewhere and saw a classmate getting in trouble for "being a chatterbox." They're allowed a lot of latitude, talking-wise, but this girl (R) was talking so much about random things that other kids at her table weren't able to get their work done, and were generally getting annoyed. So the teacher had just given R some sort of a mark (a punishment thingie, meaning five minutes off of recess) when sozlet came on the scene.
R was still having a hard time keeping from irritating her tablemates after the exchange. The teacher was casting stern glances in her direction. Then she (R) had to go to the bathroom. Sozlet did too. Then she sozlet had an idea. Upon seeing R in the bathroom, she said "Why are you here?" R, puzzled, said "Because I need to go to the... " at which point sozlet said, at the same time, "bathroom" and promptly jinxed her.
Sozlet didn't un-jinx R until the end of the day. And R stayed quiet! No more problems.
I asked sozlet whether R was annoyed and she said no. But she was happy when sozlet un-jinxed her.
I asked her whether she was helping R or the teacher and she said "both."
I'm not sure if every element of this story is completely factual but I thought it was interesting either way...