"I read about something called Low Frustration Tolerance. It is where you are generally stressed so that you kind of take it out on small things... I wonder if that might apply to most mums..."
I think this is very true. Its 20 years since I left university as a carefree, single girl with the world my oyster. After 20 years of being put upon, patronised, passed over, pooed on, put down, commuting, school politics, renting, office politics, UK politics, the weather, estate agents, my mother, my kids, my so called partner, my job, all the arseholes I've had to work for my bullshit tolerance is now pretty low and I have no particular reason anymore not to make that perfectly clear in whatever medium, whenever I feel like it.