- gaiety or jollity, esp. when accompanied by laughter: the excitement and mirth of the holiday season.
- amusement or laughter: He was unable to conceal his mirth
Now that we, hopefully, have a better understanding of the word, we need to take full advantage of this day and spread the mirth.
Please feel free to peruse my archives, located in the side bar, for the many, many posts that include mirth, glee, hilarity, merriment jollity and joviality.