It happened at a summer camp I worked at one summer. We got new groups of kids each week and one week this girl became obsessed with one of the male counselors. She announced her like of him by sneaking up behind him while he was sitting down, then quickly hopping into his lap. She then refused to get up and started squirming around deliberately rubbing her butt against his crotch. He ended up having to avoid sitting down for most of the week, because she'd repeat that every chance she got. She also was caught twice trying to find a way into the male counselor's quarters. She was given no encouragement, quite the opposite, but she didn't let up the entire week. That was even with the adults that came with her group telling her to stop it multiple times.
All the other adults thought it was funny, including me, but nowadays I understand better just how terrified the poor guy had to have been. He wasn't doing anything wrong, but that didn't necessarily matter if some kid had gone home and told their parents what they saw her doing and it was misunderstood as him doing it to the girl.