Following on from middle class insults, I have noticed that sometimes, I may make a comment and some people at work or in company would give a laugh like I am stupid. I feel I can't ask them what they are laughing at, as they would just continue to give a stupid laugh, like they are in good form and not explain it. I am quiet but like to make a reasonable effort in company. It is like they are jealous of seeing a quiet person able to "hold their own" in a group.
I have noticed this from time to time with people who are a bit passive agressive. It is designed to make you feel small. If you stand up for yourself you look petty for questioning a person smirling.
It is a real lower middle class thing, the real middle class people don't do it. The working class would say X is talking a lot today. Like they are pretending to be refined but still want to get their digs in. They wouldnt do it to a more assertive person.
Recently when they have done it, I laugh along and say it is all a big laugh, addressing them. It seems to make them think about their behaviour.