Sound check

When listening to music on your computer at the office, it is only polite to use headphones, lest you irk your officemates with your odd sense of tuneage.

When using headphones, it is only wise to check to see if the things are actually plugged in, lest you think that nobody else can hear your odd sense of tuneage and, in reality, it’s blaring loudly enough from your computer speakers to be heard past your earphones (and, thus, outward to the office beyond).

An empirically-derived word to the wise …