Today is bank holiday in the UK. Fucking boss slacked me to say he needs graphql n mongodb wired up by tomorrow. I almost tell him to fuck off, today is not work, bitch

So what? Tell him its bank holiday and that you will deal with it when you are ACTUALLY AT FUCKING WORK. They have no right to harass you on your day off. Make it clear to him that he is crossing boundaries. Don't be fucking scared either, they employ you , they don't fucking own you!