Rubber rats (and liquor)

So a Chinese guy just came in the shop.

It's not important to the story that he was Chinese.

Here is the conversation:

CHINESE GUY: "Do you have any plastic snakes or rubber rats?"

ME: "I don't have any plastic snakes but I do have this one rubber rat."

:::shows him rubber rat:::

CHINESE GUY: "No, that won't do. It's too big."

----

The rubber rat was the size of a real rat.