People who say 'are you a dog person or a cat person? You can't possibly be both!'
People who misuse the words 'literally' and 'ironic', and the phrase 'to beg the question'.
The term 'science fact' as a antonym of science fiction.
People who complain about revenue raising when they get a speeding ticket.
People who don't move to one side when they're walking towards you on a footpath.
Incorrect use of apostrophes.
People who claim to hate a particular species of animal because of a few idiosyncratic experiences, or no experiences just reliance on stereotypes.
Calls to lessen/remove parking and speed fines because poor people can't afford them.
People who don't return library books on time.
Ignorance, fear and discrimation of people with mental illnesses.
People who, when you tell them you've bought a particular car/appliance/breed of animal/style of show, feel the need to explain why they don't like it and think something else would be better.
*cough* I'm very easy going, really