I went looking for the lyrics to this, now, famous song. I could only find partial lyrics, so I’ve transcribed and combined where I could.

There are 2 variations of the song (each with their own versions, too!), which seems to have been a bone of contention that has since been resolved.

Update: A big thank you to Peter Smith for fixing some errors in my transcribing ability below!

The original authors are the Corrigan brothers, Hardy Drew and Nancy Boys, and this is their version:

O’Leary, O’Reilly, O’Hare and O’Hara
There’s no one as Irish as Barack O’Bama
From the ould Blarney stone to the green hills of Tara
There’s no one as Irish as Barack O’Bama

You don’t believe me, I hear you say
But Barack’s as Irish as was JFK
His grandaddy’s daddy came from Moneygall
A small Irish village, well known to you all

Chorus 2:
Toor a loo, toor a loo, toor a loo toor a lama
There’s no one as Irish as Barack O’Bama

He’s as Irish as bacon, and cabbage and stew
He’s Hawaiian, he’s Kenyan, American too
He’s in the White House, he took his chance
Now let’s see Barack do Riverdance

Toor a loo, toor a loo, toor a loo toor a lama
There’s no one as Irish as Barack O’Bama

From Kerry and Cork to old Donegal
Let’s hear it for Barack from old Moneygall
From the lakes of Killarney to old Connemara
There’s no one as Irish as Barack O’Bama

O’Leary, O’Reilly, O’Hare and O’Hara
There’s no one as Irish as Barack O’Bama
From the ould Blarney stone to the green hills of Tara
There’s no one as Irish as Barack O’Bama

Two thousand and eight, the White House is free
They’re cheering in Mayo, and in Skibereen
The Irish in Kenya and in Yokahama
Are cheering for president Barack O’Bama

O’Leary, O’Reilly, O’Hare and O’Hara
There’s no one as Irish as Barack O’Bama
From the ould Blarney stone to the green hills of Tara
There’s no one as Irish as Barack O’Bama

The hockey mom’s gone, and so is McCain
They’re cheering in Texas and Borrisokane
In Moneygall town, the greatest of drama
For our famous president, Barack O’Bama

Toor a loo, toor a loo, toor a loo toor a lama
There’s no one as Irish as Barack O’Bama

The great Stephen Neill a great man of God
He proved that Barack was from the auld sod
They came by bus, they came by car
To celebrate Barack, in Ollie Hayes’ bar

O’Leary, O’Reilly, O’Hare and O’Hara
There’s no one as Irish as Barack O’Bama
From the ould Blarney stone to the green hills of Tara
There’s no one as Irish as Barack O’Bama

Toor a loo, toor a loo, toor a loo toor a lama
There’s no one as Irish as Barack O’Bama

Repeat!

Shay Black then added some verses (with permission!), and this is what he came up with:

Chorus 1:
O’Leary, O’Reilly, O’Hare and O’Hara
There’s no one as Irish as Barack O’Bama
From the ould Blarney stone to the green hills of Tara
There’s no one as Irish as Barack O’Bama

You don’t believe me when I hear you say
But Barack’s as Irish as our own JFK
His grandaddy’s granddaddy came from Moneygall
A village in Offaly, well known to you all

O’Leary, O’Reilly, O’Hare and O’Hara
There’s no one as Irish as Barack O’Bama
From the ould Blarney stone to the green hills of Tara
There’s no one as Irish as Barack O’Bama

His mam’s daddy’s grandaddy was one Fulmuth Kearney
He’s as Irish as any, from the lakes of Killarney
His mam’s from a long line of great Irish mamas
There’s no one as Irish as Barack O’Bama

O’Leary, O’Reilly, O’Hare and O’Hara
There’s no one as Irish as Barack O’Bama
From the ould Blarney stone to the green hills of Tara
There’s no one as Irish as Barack O’Bama

He looks after his own, a true son of St. Patrick
He chose as his mate, Joe Biden, a Catholic
Prodies, Jews, Muslisms, even the Dalai Lama
No, there’s no one as Irish as Barack O’Bama

O’Leary, O’Reilly, O’Hare and O’Hara
There’s no one as Irish as Barack O’Bama
From the ould Blarney stone to the green hills of Tara
There’s no one as Irish as Barack O’Bama

Our Barack’s a hero, I heard them say
Fenian to Kenyan, it’s the American way
He’s Cúchulainn, Liongo, not Vishnu or Brahma
There’s no one as Irish as Barack O’Bama

O’Leary, O’Reilly, O’Hare and O’Hara
There’s no one as Irish as Barack O’Bama
From the ould Blarney stone to the green hills of Tara
There’s no one as Irish as Barack O’Bama

A name is a name and there’s no doubt about it
Barack O’Bama’s name, we can shout it
Whether apostrophe or inverted comma
There’s no one as Irish as Barack O’Bama.

O’Leary, O’Reilly, O’Hare and O’Hara
There’s no one as Irish as Barack O’Bama
From the ould Blarney stone to the green hills of Tara
There’s no one as Irish as Barack O’Bama

Now you Hillary supporters don’t you vote for McCain
And the VP needs brains, so forget about Palin
With Cheney and Bush, they are all ignorama
There’s no one as Irish as Barack O’Bama

O’Leary, O’Reilly, O’Hare and O’Hara
There’s no one as Irish as Barack O’Bama
From the ould Blarney stone to the green hills of Tara
There’s no one as Irish as Barack O’Bama

From Kerry to Cork to old Donegal
Let’s hear it for Barack from old Moneygall
From the lakes of Killarney to old Connemara
There’s no one as Irish as Barack O’Bama

O’Leary, O’Reilly, O’Hare and O’Hara
There’s no one as Irish as Barack O’Bama
From the ould Blarney stone to the green hills of Tara
There’s no one as Irish as Barack O’Bama

Tooral-U, tooral-S, tooral-A, toor-a-lama
There’s no one as Irish as Barack O’Bama

Repeat!