Getting ratty

Anyone else finding it harder to bite your tongue when people are arsey? I’m visiting my nan and we just went into the laundry room and there was a man in there and he was really grumpy and my nan (being an elderly woman) tried to make small talk seeing as he is her neighbor and he was quite rude and grumpy moaning about my nan not separating her clothes and putting it on a certain wash, and it got me quite annoyed and I snapped at him telling him that he had put his washing on the same setting! Also the fact that there wasn’t a lower temperature setting to put it on! I just seem to be getting really ratty lately people being rude it’s really annoying me and normally I would bite my tongue and walk away!