We don’t know if our son is able to read facial expressions, and the subtleties of tone often appear lost on him. So, we overemote. When we smile, we do the full Cheshire Cat. Our frowns are less :( than :c. We react to his every praiseworthy accomplishment as if he just won the Stanley Cup, and speak to him much more gruffly than would usually be necessary when reprimanding him for some transgression.
All the world is a stage, but my household in particular is like a high school drama club production.