DANCING IN SEPTEMBER ... ERR I MEAN MAY

Walking around cleaning time i stumbled into some of the girls hanging out on the bridge. They called me over. And they were like watch, lets dance. So it was Na-chan and some her buddies going .... waving their arms a couple times and then saying "number one!" ... of course me being dumb me joined in. Until a teacher broke it up, but after he left, it was back to swinging the arms and "number one!"