A Great Limud Zechut for Jews is that We Know How to Party
The fact that this year Shushan Purim coincided with St. Patrick's Day should make us grateful that no one is calling it ShushanPatrickurim or something crazy like that. Unlike Thanksgivvukah, there is nothing in common between the two holidays.
One might want to compare the two in that they are both drinking holidays. But there is much folly in that logic.
The gemara (Megila 12b [Daf | Text | English]) contrasts the ways Jews party and the ways non-Jews party. When Jews eat, drink and party, we speak praises to HKB"H for His constant kindness to us. When non-Jews eat, drink, and party, they speak words of frivolity - the kind of frivolity that would cause Ahashverosh to call for his queen to appear naked.
The Midrash, when quoting this piece, goes further and says that this is a "כפרתן של ישראל" - literally, an atonement for Israel. The Maharzu explains that it is a Limud Zechut for Israel that this is so. The Tiferet Tzion elaborates and says that the fact that the Jews acted in this way was the merit for the entire salvation and redemption in the Purim story.
Anyone who has attended a Purim Seudah with G-d-fearing Jews knows that our kind of party is one of holiness. The wine elevates us to praise HKB"H for His benevolence to us. We also say words of Torah to further enhance the sanctity of the party.
And furthermore, the party is not performed in a vacuum. The party is held as a culmination of the other Mitzvot of the day. We first read the Megila to make sure we understand why we are partying. We then spend much of the day giving to the poor and giving food items to others, infusing us with a spirit of benevolence ourselves. We then can enjoy the party with the proper holiness in which it was intended by our sages.
On the other hand, among the ways to celebrate St. Patrick's Day is by kissing the opposite gender and pinching those who do not wear green.
All I can say is ברוך אלקינו שבראנו לכבודו והבדילנו מן התועים...
May we learn the lesson well that partying like a Jew is our great defense against Heavenly prosecution and even causes Redemption to occur. במהרה בימינו אמן.