Repo! The Genetic Opera - Thankless Job

It's a thankless job, but somebody's got to do it!
Peelin' of the the tissue inch by inch,
Skinnin' off the muslces, too!
Harvestin' the kidnies for the fall!
Savin' up the livers in the fridge!
No one ever thanks me when I'm done,
How self-absorbed people can be!
With a slice or a snip,
Eenie-meenie-miney-mo!
With a cut, and a stitch,
Returning organs brand-new!
It's a thankless job, but somebody's got to do it!
Like a mop, and a broom,
No one likes a thankless job!