I delivered a paper at the Mark Twain Circle/American Humor Conference in
last December on Jokes and Metaphor in Mark Twain, using primarily Freud's
_Jokes and Their Relation to the Unconscious_ as critical underpinning.
if you (or anyone else) is interested in a copy, e-mail me and I'll try to
e-mail a copy back. I don't think I touched on cigars, though!