Class 'splainer

A person who thinks they can tell someone with a working class occupation (tradesperson/retail staff/food prep or service etc) how to do their job because 'how difficult can it be really'. The typical class 'splainer has a degree level education or higher and seems to think their 2:2 in music tech qualifies them to explain plumbing to a plumber. You might overhear a class 'splainer lecture a 19 year old part time sales assistant on stock rotation before asking 'what kind of opperation are you running here', insisting that running out of a particular item is 'ridiculous' and demanding 100% discount for the inconvenience. Some class 'splainers don't have much educational attainment but instead climbed the ranks of whatever leeching corportation was stupid enough to raise them to the dizzying hights of middle management after taking a night course in whatever defunct version of MS Office they're still running. Such individuals will try to compensate for feeling like an outsider at work by lording it over service staff often by insisting they 'don't see why you can't just {insert unreasonable demand}' and snorting 'it's hardly difficult'. These people might feel the need to affect an upper class British accent. Any push back is met with some variation of who do you think you are / who do you think you're talking to. Intersects with mansplainer though sometimes women do it too.