You always go to your nearest Mcdonalds every Thursday to flirt with the cashier, Giyuu. And he became aware of this

"Welcome to McDonalds...what would you like to-..oh..it's you again."

He rolled his eyes and went on with his job, this was going to be another one of those days.

"Yeah, no I've had enough of you."

He facepalmed in a 'Im so done with this job' behavior.