All credit to Tim O' Riordan (Cork)
I think the tune is 'The Darling Girl From Clare

Oh the wife was giving out to me last night boys
Says she you're falling down on the job
Says she 'I'm getting very frustrated
I'm like a mare waiting for a cob
So I went and took a dose of the Viagra
Lord 'tis a wonder to behold
Now there's no dilly-dallying
I'm working like a stallion
And the wife thinks I'm pure gold

What a pill to give the instant thrill
I tell no lie sir. The 'Pfizer Riser'.
Where once you drooped now you're cock-a-hoop
Ready to fly sir. Up in the sky sir.
And if you're in the form you'll stay at it 'till the dawn
'Tis Like a miracle up in Knock.
Church and state are advising there'll be a huge uprising
From this pill made down in Cork

Bill was working in the White House
But his confidence was running very low
So he went and took a dose of the Viagra
And now he tells his story blow by blow
Of how he fell for the charms of Miss Lewinsky
Saying this pill gave him some trip
Ah still he's no regrets, he ruined her party dress
In that inappropriate relationship

What a pill to give the instant thrill
I tell no lie sir. The 'Pfizer Riser'.
Where once you drooped now you're cock-a-hoop
Ready to fly sir. Up in the sky sir.
And if you're in the form you'll stay at it 'till the dawn
'Tis like a miracle up in Knock.
Church and state are advising there'll be a huge uprising
From this pill made down in Cork

Johnny Murphy was well into his nineties
A man who loved to sing and to dance
Says he now before I meet my maker
I'd love another shot of romance
So he went and took a dose of the Viagra
And his diary began to fill
Now ladies by the score, are knocking on his door
Since Johnny's been on the pill

What a pill to give the instant thrill
I tell no lie sir. The 'Pfizer Riser'.
Where once you drooped now you're cock-a-hoop
Ready to fly sir. Up in the sky sir.
And if you're in the form you'll stay at it 'till the dawn
'Tis like a miracle up in Knock.
Church and state are advising there'll be a huge uprising
From this pill made down in Cork

All the best

Mj