The person I had in mind was this dude on a Lego forum I used to frequent. (Fuck me, that was nearly 20 years ago at this point). He was in his 40s or 50s, well paid as a Software Architect, and the most pompous, arrogant arsehole you could imagine, and he found it impossible to conceive that he could ever be wrong about anything. Me and a few mates took great delight in mocking him up our sleeves.