Why Phonics And Reading Comprehension Are Important Life Skills

This exchange SERIOUSLY just happened:

Her: Is this ume dressing?

Me: No, it's not.

Her: How can you tell?

Me: Well, ume is a different color, and this is orange. Also, on the label, it says XY Dressing, not ume.

Her: Oh. Are you sure?

Me: *glare*

Her: I don't see any ume back there.

Me: We are out.

Her: Are you sure?

Me: Yes ma'am. We are out.

Her: Oh. Are you sure?

Me: *glare*

Now, I am not one to judge others TOO harshly, when possible. But this is ridiculous. If you can't read it, and I still tell you... are you that high or stupid and can't understand the fact that I am not lying to you about salad dressing? Lord Jesus, have mercy...