Rude Ca****er at McDonald's Today

Today, we went to McDonald's for breakfast. The ca****er was rude to us
for no reason. She wouldn't smile, talked monotone and kept looking
down at the register. To top it off, she was a ****ft manager! We
didn't do anything but walk in and step up to the register - just me
and my mom. When my mom went to get a refill on her coffee, this
manager had an attitude so my mom confronted her about it. She (the
manager) complained that she was having a 'blah' day. Frankly, she
needs to quit her job and find something else.