What ground my gears at work today:
When you go to the vet with your pet, plan ahead and tell them what you'd like done when you book the appointment. Don't be standing there at the desk like "Oh, and can you cut their nails? And look at this random spot on their paw? And do this complicated arithmetic problem? And tell me why they stare at the ceiling?"
I'm exaggerating, but only just a little. Get it together, people.