Just for fun, what are the little things you notice about people that actually tell you quite a lot about their nature.
I noticed last week that whenever we go for dinner with my SIL she always assumes the first meal that comes out is hers. Even if it’s very obviously not. And if you order the same thing, she practically snatches the one that is served first. Lots of eye balling peoples dinner to check no one has got anything she ordered. I can definitely extend this behaviour in to other areas of her life too. 
Anyone else spot these little things?