It is about the well-known "Black Widowers" series of Asimov's stories. I'm currently having difficulties in understanding some passages in the "Out of Sight" story (the last one) from the 1-st book.
The first question is why James Drake asks Roger Halsted:
Why do you call a dirty limerick dirty?
There is no a single place in the story (neither before nor after the question), where Roger names a limerick dirty. Is this a typo, a missed word somewhere, or a pun (if it's the last, I don't get it).
The second question is about the limerick for the Queen, specfically in the last line:
TO HAVE HERSELF MENTIONED AS LS.
what does LS stand for? There is a lot of meanings for this abbreviation.