This is my first AIBU so please be gentle!
On Saturday while at a party, a gang of us were watching one of the Olympic boxing matches. It was GB v Ireland. I'm Irish, my DH is British. Most of the people watching the match were British but there was one other Irish woman there too. There was a bit of good hearted shouting at the tv for each side when my DH's best friend shouted, in quite a nasty way, "Go on, smack the bloody Paddy" in support of the GB boxer. There was a nervous lull in the chat from everyone else because the tone and the way it was said was quite vicious coupled with the derogatory "Paddy" term used. My DH gave his friend a poke in the side and his friend gave an apology, which was negated by the fact that he laughed through his apology. I and the other Irish woman froze because it really did feel very nasty.
I've had abuse in "joke" form before from other people based on me being Irish but never from someone that I would consider to be a good friend and I'm still quite upset by it. I don't know if I'm so upset because it came from someone close to me.
Even my DH was quite shocked by the sentiment and the way it was said.
The man who said it is normally really lovely but with a couple of drinks, he can turn into a bit of a brat.
So what I'm asking is AIBU to be still upset and if I am, how do I grow a thicker skin?