From a CD entitled "Ireland's Greatest Hits"

Clancy Lowered the Boom
sung by Dennis Day

Now Clancy was a peaceful man if you know what I mean.
The cops picked up the pieces after Clancy left the scene.
He never looked for trouble that's a fact you can assume,
But nevertheless, when trouble would press, Clancy lowered the boom!

Chorus:
Oh, that Clancy! Oh, that Clancy!
Whenever they got his Irish up, Clancy lowered the boom

O'Leary was a fighting man they all knew he was tough.
He strutted around the neighborhood just shooting off his guff.
He picked a fight with Clancy, then and there he sealed his doom,
Before you could shout, "O'Leary, look out!” Clancy lowered the boom!

Now Clancy left the barber shop with tonic on his hair.
He walked into the poolroom and he met O'Riley there.
O'Riley said, "For goodness sakes, now do I smell perfume?"
Before you could stack your cue on the rack, Clancy lowered the boom!

Mulroney walked into the bar and ordered up a round.
He left his drink to telephone and Clancy drank it down.
Mulroney said, "Who drank me drink? I'll lay him in his tomb!"
Before you could pat the top of your hat, Clancy lowered the boom!

O'Hoolahan delivered ice to Mrs. Clancy's flat.
He'd always lingered for a while to talk of this and that.
One day he kissed her just as Clancy walked into the room,
Before you could say the time of the day, Clancy lowered the boom!

The neighbors all turned out for Kate O'Grady's wedding night.
McDougal said, "Let's have some fun, I think I'll start a fight!"
He wrecked the hall and kissed the bride and pulverized the groom,
Then quick as a wink, before you could think, Clancy lowered the boom!