Obnoxiety
When someone acts like they're better than everyone else, even if they're not. Usually smells like stale coffee.
'I'm doing obnoxiety,' he said, while wearing a suit and eating a muffin in the park.
My sister called my mom 'a classic obnoxiety' after she dropped a plate.
The guy at the gym said, 'Obnoxiety is my favorite sport.'