Well, Clancy, I think you raised more questions than you answered (which is often a good thing). I found the lyrics, but not the tune.
-Joe Offer-

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THE CRAIC WAS NINETY IN THE ISLE OF MAN

Well, weren't we the rare old stock?
Spent the evening getting locked
Up in the Ace Of Hearts
where the high stools were engagin'
Over the Butt Bridge, down by the dock,
The boat she sailed at five o'clock
"Hurry boys now!" said Whack,
"Or before we're there, we'll all be back!"
Carry him if you can!
The craic was 90 in the Isle of Man!

Before we reached the Alexander base
The ding-dong we did surely raise
In the bar of the ship we had great sport
as the boat she sailed out of the port
Landed up in the Douglas head
Inquirin' for a vacant bed
The dinin' room we soon got shown
by a decent woman up the road
"Lads, at it if you can!"
The craic was 90 in the Isle of Man!

Next mornin' we went for a ramble round
Viewed the sights of Douglas town
Then we went for a nightly session
in a pub they call Dick Darbie's
We must have been drunk by half past three
To sober up we went swimmin' in the sea
Back to the digs for a spruce up
and while waitin' for the fry
We all drew up our plan
The craic was 90 in the Isle of Man!

That night we went to the Texas Bar
Came back down by horse and car
Met Big Jim and all went in
to drink some wine at Yate's
The Liverpool judies it was said
Were all to be found in the Douglas Head
McShane was there in his suit and shirt
them foreign girls he was tryin' to flirt
Sayin' "Here, girls, I'm your man!"
The craic was 90 in the Isle of Man!

Whacker fancied his good looks
On an Isle of Man woman he was struck
But a Liverpool lad was by her side
and he was throwin' the jar into her
Whacker thought he'd take a chance
Asked the quare one out to dance
Around the floor they stepped it out
and to Whack it was no bother
Everything was goin' to plan
The craic was 90 in the Isle of Man!

The Isle of Man woman fancied Whack
Your man stood there till his mates came back
Whack! They all whacked into Whack
and Whack was whacked out on his back
The police force arrived as well
Banjoed a couple of them as well
Landed up in the Douglas jail
until the Dublin boat did sail
Deported every man!
The craic was 90 in the Isle of Man!

Copied from The Arizona Music Society (click).