Something That Really Grinds My Gears

let me rant for a second
  1. i HATE when the professor is late to class and everyone is like DID YOU KNOW IF THEY'RE NOT HERE IN 15 MINUTES WE CAN LEAVE???
  2. okay we are not in high school anymore
  3. you can leave literally whenever you want whether the professor is there or not
  4. you're an adult
  5. why do people always say this
  6. my gears are GROUND