"I was walking down the street wearing glasses when the prescription ran out"

This quote by Steven Wright is an amusing take on the idea of being unprepared for life's unanticipated events. It indicates that the speaker was walking down the street using glasses, however the prescription had actually run out, leaving them not able to see clearly. This could be interpreted as a metaphor for life, where we frequently find ourselves in situations that we are not prepared for. It might likewise be seen as a tip to be gotten ready for the unexpected, as life can often throw us curveballs. The quote is an easy going way of advising us to be prepared for whatever life throws our way, and to not take ourselves too seriously.