Gosh, do we all need cheering up at the moment.
A silly old gasman called Peter
Used a match to inspect his gas heater.
Touched a leak with his light
And blew out of sight -
And, as anyone who knows anything about poetry can tell you, he also ruined the metre.
(No, no, it's all right. Peter survived the experience unscathed. In fact he became famous, had his own prime-time chat show, and in the end he married the love of his life, a plumber called Max, settled down, had several sensible children, and lived happily ever after.)
Word To Use Today: metre/meter. The word meaning measuring device comes from the Old English metan. The word that describes the bumpiness of poetry comes from the Greek metron, which means measure (as in poetry).