Yes, both DH and I can hear it (both 20s).
As an Education major, this is discerning becuase we talked about it in class and apparently, the kids will be giggling and the teacher has no idea why becuase they can't hear it. I think the issue in school more than anything is the fact tha the authority figure (if you will) is being made to look ridiculous. The other thing we discussed was incoming text messages. I took the stand that most college students do it right there in lecture no matter the size and all they have to do is pull the phone out and click it open. In most schools though (not sure about high schools though), they have to be out-of-sight stored and off.
So, I don't personally see the implications beyond the kids laughing at the teacher. If it was my class, I don't think it would bother me. As a science teacher, I just assigne my goobers some type of project on why they can hear it and adults can't, etc. Make it some sort of educational thing.
Who's brilliant idea was this?!