Selective Listening.

Yesterday, my 13-year-old son was in his room reading. My 8-year-old son asked me to make tacos, one of our favorite foods. I took a few minutes to fix a quick meal and then, when my 8-year-old walked back into the kitchen, I said "The tacos are ready". Within seconds, my 13-year-old was in the kitchen from his room, and saying "Tacos?" I commented on how he'd been able to hear me from that distance, since I was speaking in a normal tone of voice, not yelling, and he said "I listen for food words or my name." LoL.