"D"H is very fed up with all the Covid stuff at the moment. I wouldn't say he's a full on conspiracy theory nut but he loves to go on about how it's only a cold and everyone being sheep getting more than their two vaccines ect ect.
I try not to get dragged into it but sometimes we do have a bit of back and forth debating about it.
Tonight we were talking about vaccines and he did his usual going on a rant because I've booked the booster and how the media is controlling me yada yada... Anyway, I was explaining why, whilst I'm not overly concerned about Covid personally, I do think vaccines, like any vaccine, are good for X and Y reason.
Anyway long and short of it he ranted a bit more about it and then finished it with "YOU DAFT FUCKING COW".
Not jokingly, very seriously and obviously annoyed at me like I'd done some sort of awful thing 
I am so mad. I know it's not the worst insult in the world but the way he said it and the way it was so completely unnecessary has really pissed me off.
He is infuriating to talk to about anything like this, he thinks he knows best and I'm annoyed at myself for getting suckered into the conversation tonight but I wasn't saying anything personal to him and certainly wasn't arguing/shouting/raising voices, I am so pissed that he said that and made it into a personal argument.