I play Roblox sometimes, and on their obstical courses, there are people who like to kill you, if you don't reach the end before you do. If they keep doing it, I just say "Stop being so vexatious" and nobody replies...
Yesterday, I said it to someone, he asked what it meant and I said to look it up. He ignored me and carried on. I told him he must have a boring life as he keeps doing it, then asks if i'm British, and said he knew it because I used long words and was snobbish...