Understanding Easy Ice Isn’t Easy For Some

I am a carhop at a drive-in fast food place. A customer orders a medium soda with easy ice. I watch my coworker make the drink with easy ice as requested; however, this conversation ensues after I deliver his drink to him.

Customer: *Shaking the cup* “I wanted easy ice and this is not easy ice.”

I remember watching it being made with easy ice but try to remain polite.

Me: “Oh, are you sure? I thought I saw my coworker make it with easy ice.”

The customer takes the lid off the cup and looks inside.

Customer: “Uh, no. I can see the ice all the way at the top. This is not easy ice.”

Me: “Um… sir? Ice floats.”

He stared me down for a good ten seconds before I told him I’d remake it for him. I gave him three cubes of crushed ice in his new soda. I don’t know what he wanted me to do — defy physics to make the ice stay at the bottom? Anyway, he drove away happily with his three little cubes of ice.