That was the sound of .... nothing.
It was not the sound of someone asking me for the eight thousandth time whether they can watch tv/play a videogame/have a lollipop/dance naked on the couch. It was not the sound of someone whining about not being able to do any of the above. It was not the telltale sound of skin smacking skin, nor the subsequent wails and indignant incriminations. It was not the sound of me loading the dishwasher for the third time today, nor the dryer buzzer going off. It was not the phone ringing and the ensuing Act of Congress necessary to coordinate a playdate.
No, no. That sound you don't hear is silence. Beautiful, quiet, peaceful, blissful silence.
Happy first day of school!