Well this is more or less what some of us used to sing a looong time ago:

(G) On the Coney Island washboard she would (E) play.
She would (A) play it on the boardwalk every day.
With (D7) soapsuds all around,
From a (G) bucket on the (E) ground,
(A7) Rub-a-dub-a-dub
In a little tub
Where (D7) all good things are found.
It's the (G) thimbles on her fingers make the (E) noise.
She'll do the (A7) Charleston in the laundry for the (D7) boys.
You can (C) stamp your feet.
It's a (Cm) real treat
To (G) hear that good old (E) Charleston beat
Of the (A7) Coney Island (D7) washboard rounde-(G)-lay.
Coney (E) Island!
The (A7) Coney Island (D7) washboard rounde-(G)-lay-ay.
Good luck with it!
Ray