On Monday my last period class of the day was a wee bit chatty. Persistently chatty, I guess, because I kept (half jokingly) taking deep breaths in an obvious fashion. They know I take yoga because I yammer about it, and they know that part of the reason is to provide "calm".
Well, apparently, it didn't seem to be working because one of the students pipes up, "you should ask for a refund". (bunch of comics, they are.)