I couldn't see the clock properly, but I think it was around 2am last night when I finally realized that the 7th graders were not going to get tired very soon of making loud animal noises and got up to close the window. There was one particularly insistent one (I hope he looses his voice for a while) who appeared to be trying to roar like a lion, but sounded more like an annoyed cow or hog. I think that the echoing space between the two wide towers next to us is just too much for these students to resist...