This reminds me of a somewhat similar situation when I was in school. I have a habit of cracking my neck and sometimes it can get rather loud. One day in Contemporary world problems (PC for Civics class I guess) And I had a rather large crick in my neck and couldn't turn it to one side. So I took my hands and turned my head quickly to one side and a loud crack echoed through the room. To me, it felt nice, so my eyes rolled up and I lay forward to enjoy the freedom of a fully mobile neck.
Other people though I had just snapped my own neck in the middle of class so the girls freaked out and the guys just stared. The teacher came to check on me and I sat up. And I then got my reputation for being a zombie. :/