Express Yourself At The Express Checkout

I was at a grocery store with two items. I went to the Customer Service desk, which had a sign:

Sign: “FIVE ITEMS OR LESS.”

Just as I was approaching the counter, a customer ducked in front of me with a basket that had about twelve to fifteen items, and she started unloading it onto the counter.

I looked at the cashier, pointed at the sign, held up my hand with my fingers spread out, and gestured as a question. She looked at me and shrugged, as if she couldn’t do anything about it. 

So, I said to the customer:

Me: “You must be a natural blonde.”

Customer: “I am! How did you know?”

I pointed at the sign.

Me: “Because you can’t count to five.”

Oh, was she mad.

She paid and got out of there in a blur. Afterward, the cashier was grinning. I said:

Me: “You probably aren’t allowed to say anything… but I can.”