Grown men who think shouting insults at passers by is an acceptable way to behave.
Grown women who leave unwrapped used sanitary towels on the floor in the ladies, when there's a perfectly good bin they could use (ditto the ones who leave pee all over the seat).
The assumption that anyone who can't cook is lazy. No, some of us are bad at it, just like you can be bad at maths/spelling/sports/computers you name it.
People who can't go to things because 'there's no one to look after their kid' when they have an NT 15 year old who could easily be left unattended for an hour.
Pressure on women to cover up. No, wearing a knee length skirt and a t-shirt on a warm day in July does not make me a 'slut', thank you.
People with no sense of personal space walking so close behind me they're almost touching, in an attempt to make me walk at the same speed and in the same direction as them. I always make sure I stop suddenly and for no reason just to annoy those people.
The assumption that anyone who doesn't drink must be religious or have health issues.
Colleagues who think being told to put their phone away and do some work is a serious breach of their human rights.
Shop assistants who say 'darling' or 'sweetheart' five times per sentence but can't manage 'please' or 'thank you'.
Offspring of company owners/directors who were handed a job to them on a plate by their parent the minute they left education and have been there ever since, saying things like 'why don't all these dole dossers just get jobs?'. Well, you know, because other people actually have to look for them.
The assumption that everyone works days.
The assumption that all women are financially dependent on their partners, or want to be.