Anybody know where this comes from? I understand Barry Finn used to sing it.

Oh, A Sewer Man Am I

Oh, a [C] sewer man am I and my [F] trade I deftly [C] ply,
As [F] underneath the [C] city streets I [G7] go.
And my [C] hope for paradise, is to [F] wade up [Dm] to my [G7] thighs,
Oh, I'm [F] glad I'm [G7] working down [C] below. —–––––––– CHORUS
CHORUS: [F] Down below, down [C] below,
Oh, it's dark but it's home to me, you [G7] know,
It's the [C] only place, I find, I can [F] get some [Dm] peace of [G7] mind
Yes I'm [F] glad I'm [G7] working down be [C] low.
There are [C] rules to the trade that [F] have to be o-[C]-beyed,
And [F] every movement [C] must be made just [G7] so.
You must [C] watch how you stand, and [F] where you [Dm] put your [G7] hand,
Still I'm [F] glad I'm [G7] working down be-[C]-low. ---–——–––––––--–––––––-- CHORUS
There was [C] cause for alarm at a [F] local sewage [C] farm,
A [F] man fell down a [C] pit some years [G7] ago.
Since the [C] accident occurred he's been [F] lying [Dm] there in- [G7] -terred,
Oh, I'm [F] glad I'm [G7] working down be-[C]-low. --—–––––––––––––----–––---CHORUS
Oh, in [C] Paris I have found they take [F] tourists under- [C] -ground,
And [F] even charge a [C] small fee for the [G7] show.
While in [C] Venice I've heard tell they float [F] boats on [Dm] them as [G7] well,
Oh, I'm [F] glad I'm [G7] working down be-[C]-low. ---—––––––-—–——–-—-–- CHORUS
It’s a [C] wonderful life, you can [F] hide here from your [C] wife,
And [F] leave behind your every [C] care and [G7] woe.
I may [C] be a sewer rat but I'm [F] not to [Dm] be sniffed [G7] at.
Oh, I'm [F] glad I'm [G7] working down be-[C]-low. --—––-––—––-–––––-––––-- CHORUS

http://www.ukulele-joe.co.uk/books/ujvol2.pdf