You're saying those photos are real? Don't 'insult my intelligence'. [=don't treat me as though I am stupid; don't expect me to believe those photos are real]
Most people were forced to work longer hours each week, and to 'add insult to injury', the company decided not to give pay raises.
They're understandably 'insulted' when no one asks for their opinion on a matter that affects them so much.
(..) That's true. l can't deny it. She needs me. What can l say ? And most of her limbs work, whereas l'm stuck in this thing day and night, in a house full of ramps. And to add insult to serious injury, l've totally given up smoking, my favourite thing. And, um, well, the truth is, (..)1999 Notting Hill