I was going to suggest Green and Yellow (Yeller, Yaller), a cockney parody of Lord Randall, but I can't seem to find it in the search.
Here it is, and sorry if is already here.
Hope I haven't forgotten any verses

Green and Yeller

Where have you been, Henry my son
Where have you been, my currant bun
In the woods dear mother
In the woods dear mother

Chorus:
Oh mother be quick, I wanna be sick, and lay me down to die

What did you do there, Henry my boy
What did you do, my saveloy (Note: saveloy is a type of sausage)
Ate, dear mother
Ate, dear mother.
Oh mother be quick, I wanna be sick, and lay me down to die

What did you eat, Henry my son
What did you eat, my currant bun
Eels, dear mother
Eels, dear mother
Oh mother be quick, I wanna be sick, and lay me down to die

What colour were them eels, Henry my boy
What colour were them eels, my saveloy
Green and Yeller
Green and Yeller
Oh mother be quick, I wanna be sick, and lay me down to die

Them wasn't eels, them was snakes, Henry my son
Them wasn't eels, them was snakes, my currant bun
(pause)
Yeuch, dear mother
Yeuch, dear mother
Oh mother be quick, I wanna be sick, and lay me down to die

What colour flowers do you want on your grave, Henry my boy
What colour flowers do you want on your grave, my saveloy
(all together, loudly)
GREEN AND YELLER
GREEN AND YELLER
Oh mother be quick, I wanna be sick, and lay me down to die

?Anon
Date unknown, but pre 1970