Sexual Noises

Hey everyone, I am posting on behalf of My redditless wife. She has been dealing with several male students making sexual noises by “clapping their thighs together” in class. She’s not sure how to go about dealing with it, but she figured you guys would have the answer lol. I want to preface, this is not about moaning, she is able to address that the same way many others have on Reddit, this is about students making sex noises with their body parts lol. Thanks for any and all help!

Update: My wife addressed the situation today by walking up to their table during class and saying (in her very best teacher voice of course), "You guys need to stop clapping your thighs together, it's very inappropriate." I guess one of the students stopped and would not look at her the rest of the day. The other would not stop and kept making the noises.