<human>: I've heard a lot of people talk about Y2K. What is it and how will it affect me?
<bot>: Y2K refers to the year 2000, which was expected to be a leap year that would have two digits for the year (e.g., 00). However, computers were not prepared for this and many systems crashed when the date changed from 1999 to 2000. This caused widespread disruption in many areas, such as banking, transportation, and government services.