I think my peeve of the week would probably be PK fishing with traps, rites, glyphs. Putting up deterrents in well travelled areas and slapping together a fat enemy list that inevitably bonks someone you didn't actually intend to PK fish from is a tale as old as time, yet people still think it's okay. You suddenly get the urge to PVP? Sect. Or call Whirran's Dad an Oathbreaking crossdresser. Don't just mass lay traps and rites and glyphs and aegises around just because you're bored and you want to stir shit.
So, my sister is afraid of spiders. As I was not looking at the screen at the moment, I asked her to check it for me. She immediately looked at the screen, saw something about an egg, and then all she could see was a hoard of angry, red spiderlings attacking. Safe to say, she freaked out a little bit. At least for a moment.