The first time I heard it was when my wife and I were at her Mom's cottage in a retirement community. She had a bag of trash and they come to collect it. I said I'll take it to the dumpster on our way out. I toss the bag on my hard tonneau and off we go. I leave it running, get out and I got yelled at by the vehicle that I'M paying for.
I get back in and my wife asks, "What was that ?" to which I replied, "That, m'dear, was fu**ing stupid, that's what that was.".
I hear it every now and then when I get out with the vehicle running. I just turn and give the Jeep the finger.