By far not the worst out there, but oh my God. People who go to the bank because they need brand new $2 bills WITH CHRONOLOGICAL SERIAL NUMBERS as a Christmas gift. They all think they're so fucking original. They're not. And since nobody fucking uses $2 bills, we don't keep thousands of them (in crisp, chronological order) in the vault.
Also, people who need new bills. They're a pain in the fucking ass to count. I understand not wanting gross money (especially in December, we were careful about setting beat up money to the side, and giving nicer money when it was clearly for gifts) but don't be mad when it takes us twice as long to count it. New money is sticky. Nice-looking money is not.
And fuck everyone who pulled up to the drive-thru at 6am on Black Friday and tell me it's a shame I have to be up so early. YOU'RE THE REASON I AM HERE. (also everyone who says that on Christmas Eve, Sunday mornings, Saturday nights, etc.)