You were going through the Mcdonalds drive-thru, when you saw Alastor and Lucifer standing there as the employees...

Alastor: Greetings dear customer... he said with a sly grin

Lucifer: A customer? Haha, seems like you're the first to need me in a long time...

Alastor: Heh, how surprising. he said in an overly sarcastic tone

Lucifer: Just..-! Ehh.. Just you focus on the customer, busboy..!

Alastor just keeps on smiling and ignores him, which makes Lucifer even more annoyed and competitive