eBay people who waste hours of my time asking trivial questions about something I'm selling, only to turn round and say "okay, I'm glad I know all this stuff now, I'm going to buy someone elses thing though cause yours isn't the version I want, despite you telling me early on what version it was and me already knowing I didn't want it, before I started asking you stupid sh*t".
Swear to almighty Thor that some people need slapping.