Only Side They’re Getting Is A Sideways Glance

I witness this interaction as I’m in line to order from a fast food restaurant at a local theme park. A customer pushes his way to the counter, bypassing the line.

Customer: “Excuse me, I just need a side tray.”

Worker: “A side tray?”

Customer: “Yeah, I need a side tray. Can I get one?”

The worker offers him a large plastic tray, the type you’d put a whole order on. 

Customer: “No! I need a side tray. A siiiiide traaaaaaay.”

The worker offers him a disposable plate with a questioning look on her face.

Customer: “A. Side. Tray. I need a side tray.”

Worker: “I’m not sure what that is, sir.”

The worker looks around her workspace and offers him a clam-shell takeout box.

Customer: “No, I need a side tray! Jeez, how many different words do I need to use to get you to understand what I want?!”

He grabbed the takeout box and stormed off, still muttering to his friend about the “side tray.” By the confusion on the faces of all of the other customers in line, I’m guessing he should have used more than just two words to describe this mysterious thing he wanted!