...more great Tom Lehrer rhymes:

"Smut"

Give me smut and nothing but
A dirty novel I can't shut
If it's uncut
And unsubt-
Tle

I've never quibbled if it was ribald
I would devour where others merely nibbled
As the judge remarked the day that he
Acquitted my Aunt Hortense
"To be smut it must be ut-
Terly without redeeming social importance"

Especially dividing "ubsubtle" and "utterly". Amazing.