Wanna hear my St. Patrick's Day joke?
That's just not funny. Your premise makes no sense.

Q: Why does Irish Chili have only 239 beans?
A: Because one more would be two-farty.
(Okay, this joke works better spoken than written.)
To go to a tavern.
An Irishman once saw a billboard that said, "Drink Canada Dry," so he went there and tried.
This is the one and only Irish joke I've ever heard that I thought was truly worthy of being repeated:
An Englishman, a Scotsman and an Irishman walk into a bar. (Already intrigued, aren't you?)
All three order a pint of Guinness. (The plot thickens!)
By the sort of outrageous coincidence that only occurs in jokes of this nature, three flies buzz into the bar and land on the pints, one per glass. (Oh! The horror!)
The Englishman curls his lip in disgust and pushes the tainted pint away.
The Scotsman shrugs, picks the fly off, tosses it over his shoulder and downs his drink.
The Irishman grabs the fly, holds it over the glass and yells, "SPIT IT OUT, Y' BASTUHD! SPIT IT OUT!"
Thankew, thankew...
Speaking of bar jokes...
--NT
They all laughed at me when I said I wanted to be a comedian.
But I showed them, and nobody's laughing at me now!
If I became a red name, I would be all "and what would you mere mortals like to entertain me with today, mu hu ha ha ha!" ~Arcanaville
Ah, ye olde Pubbe Gagge. That old chestnut.
So an Irishman walks out of a bar.
(Wut? It could happen)