[Instrumental Intro]
[Verse 1]
Sleeping very soundly on a Saturday morning
I was dreaming I was Al Capone
There's a rumour going round, gotta clear outta town
Yeah, I'm smelling like a dry fish bone
Here come the law, gonna break down the door
Gonna carry me away once more
Never, I never, I never want it any more
Gotta get away from this stone-cold floor
[Chorus]
Woo, ow
[Instrumental Break]
[Verse 2]
Rainy afternoon, I gotta blow a typhoon
And I'm playing on my slide trombone
Anymore, anymore, cannot take it anymore
Gotta get away from this stone-cold floor
[Chorus]
Crazy
Stone-cold crazy, you know
Ow, hit 'em up
[Guitar Solo]
[Verse 3]
Walking down the street, shooting people that I meet
With my rubber tommy water gun
Here come the deputy, he's gonna come and getta me
I gotta get me get up and run
They got the sirens loose
I ran right outta juice
They're going to put me in a cell
If I can't go to Heaven, will they let me go to Hell?
[Chorus]
Crazy
Stone-cold crazy, you know
[Outro]
Ow
Al Capone was a Notorious gangster who was the leader of the Chicago Outfit gang. He gained fame during the Prohibition era, as a result of running a bootlegging operation. American news outlets referred to him as “Public Enemy No. 1”. When the Chicago Outfit gangsters came into town to kill rival gang members, the citizens would move out to not get caught in the cross-fire. The most well known attacks of these attacks was the St. Valentine’s day Massacre in which Al Capone sent members of his gang to kill his rival George “Bugs” Moran gang members
http://www.history.com/topics/saint-valentines-day-massacre

There are two possible ways to interpret the chorus:
After being arrested and convicted, Capone contracted neurosyphilis, which resulted in him being released early in 1939 as the dementia that the disease caused worsened; by 1946, he had reportedly regressed to the mental state of a 12-year-old, forcing him to live as a recluse for the remainder of his life. The narrator, envisioning himself as Capone, fears meeting the same fate and wishes to escape the police before he can be thrown in jail.
The narrator is aware that his visions of himself as Al Capone are delusional, but he embraces that delusion and revels in his own insanity, tying in with further mentions of him attempting to live up to the idea in the third verse.
Nothing like taking a few laughs by getting people wet, after you scare them to death by making them believe it’s actually a real weapon.

If it’s shaped as an old-style Tommy Gun, it even fits the Al Capone delusions that open the song.
