I was visiting a milonga in another town far away. As I scanned the room I saw a woman looking in my direction. I gave her my best cabeceo. She responded by raising her eyebrows, pointing at herself, and mouthing the words "who me?"It's a somewhat natural response in certain situations, but it's not effective. It just prolongs the process unnecessarily.
Don't use "who me?" as a response to a cabeceo. A better response is to either accept the cabeceo with a smile and a nod, or reject the cabeceo by looking away.
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