It is interesting that something like this exists, and I wish that I knew whether it was from a person of Irish heritage. This stereotype likely stems from the fact that irish people do in fact drink, but so does a great majority of other people.
When Irish Eyes Are Smiling sure 'tis like a morn in spring in the lilt of Irish laughter you can hear the angels sing. When Irish hearts are happy all the world seems bright and gay. And when Irish eyes are smiling, sure, they steal your heart away.