DS(8) has a small number of friends in his school, and his birthday is coming up. He has said that he doesn't want to invite one of his friends, Tom. But Tom recently did invite DS to his party, so it seems rude to not invite him back. Moreover, I know his mum from the school runs; we often chat while waiting for the boys to come out, so it would be awkward.
DS' reason for not wanting to invite Tom, is that he sometimes uses swear words and DS doesn't want his little brother to hear these (though I'm sure he hears worse in the playground anyway), but more importantly, that Tom keeps saying 'your mum is fat'. (I'm not, but that doesn't matter).
I told DS that I wouldn't invite Tom, and I haven't yet. But I have honestly no idea whether I am making a mistake by breaking 'birthday etiquette'. Also wondering how to tell his mum.
AIBU - Invite Tom.
AINBU - Don't invite Tom.