did you know

Although phrased as the start of a question, it is actually an introduction from somebody who wants to impart information. It’s used quite a lot by some teachers but it usually comes from somebody who wants bore your arse off telling you things you don’t need to know, don’t want o know and which are less interesting than the sex lives of Venusian bacteria. It’s usually impossible to get away without committing murder unless you can comeback with something that stops them in their tracks and allows you to escape.