But at the end of the week is half term, and I've got one or two posts that don't involve me talking to teenagers planned. Maybe I'll actually finish them! Until then, here's a joke overheard on the Piccadilly line yesterday evening:
Q. Who is the leader of the tissues?
A. The hankie-chief
 First one today! I was surprisingly nervous for them. Not as nervous as they were though.
 For a variety of reasons I was not the right person to pass on the news to other people; no one would believe me unless they saw the ring itself or got a sworn oath on the subject.
 It had an emerald the size of a hen's egg! I kid you not!
 Just kidding.
 I say overheard, but the Chelsea supporter in question fairly shouted it in an attempt to liven up the carriage.