I once got a complaint to HR that I insulted a coworkers masculinity because I said his shoes were cool. The guy then quit the next day and in his exit interview he claimed I repeatedly talked to him like he was a woman. All I can remember is when I was training him I might have called him "hun" or "silly"? I have no idea. I often call people stuff like goober, goof, homie, hun, bud, etc.
HR told me the entire office was laughing about it. I think maybe I accidentally gave the dude a kind of gay panic or something lmao