When one of my sisters and I were young, we would be told to go to our rooms to separate ourselves. Then we would talk through the HVAC vents.
Tonight, the better-half and I were half arguing. I was in the bathroom speaking under my breath and the better-half was in the basement looking for a bottle of wine. He heard me complaining. We talked through the floor vent. Exactly as I did when I was 8. Guess he understands about arguing with siblings.
Or I need to shut my mouth.