The phrase represents something unremarkable or ordinary; it lacks the exceptional qualities that would warrant sharing news of it. For instance, a restaurant meal described as such implies it was neither particularly good nor bad, simply average. It is used to express a lack of excitement or interest in a particular event, situation, or object.
Its value lies in its concise and universally understood expression of mediocrity. The expression finds its roots in the historical practice of sending letters home to family and friends. Sharing information about one’s experiences was commonplace; however, something truly outstanding would merit a special communication. Thus, the lack of a need to communicate stems from the lack of something noteworthy.
