If you've ever had a job, then odds are the people you encounter/serve have pissed you off in some way.
Like, bartenders hate when customers don't have their money ready when it's time to order a drink:

Postal workers hate when people block the mailbox with their car:

Retail workers HATE how customers never put stuff back in the right places:

Maybe you're a nurse and can't stand when people do this:
Whatever you career is, we want to know what outside people — NOT coworkers — do that makes your day harder. Tell us via the DropBox below. (Bonus points if you have pictures!)
The best responses will be featured in a BuzzFeed Community post or video!