While I'm thinking of a question, here's that Asimov song:
Oh, give me a clone,
Of my own flesh and bone,
With it's Y chromosome changed to X.
And when it is grown,
Then my very own clone,
Will be me of the opposite sex!
One with more verses and a chorus can be found at
http://www.commonplacebook.com/jokes...of_my_own.shtm, but the website claims that "The first verse and chorus are by science fiction writer Randall Garrett. The other verses are by Isaac Asimov." I think the site has that backwards, as I've always heard that first verse attributed to Asimov, and I think I even have a book of his somewhere that claims as much.
BTW, I thought that sounded like something Lehrer would have written. I thing I've even heard it before.