Copied And Pasted Answer Over And Over

(I go into the copy room at a research library to find out how much copies cost, so I know how much cash to get over my lunch break. I’m not holding anything at all, and, obviously, I am not about to use the copy machine.)

Patron: *from a table ten feet away* “I’m using that.”

Me: “Oh, okay. I’m just seeing how much copies are.”

Patron: “You can’t use it! I’m using it.”

Me: “Oh, no. I don’t want it now; I just want to find out how much they cost.”

Patron: “I’m making a lot of copies right now, and you can’t use it!”

Me: *having verified the cost and starting to move away* “I don’t have anything to copy right now; I just want to know how much money I need to get.”

Patron: “You can’t use it! I’m using it!”