And it occurs to me: dunno if it had died by the time you joined the Forum, but if you enjoyed Callahan’s you might well find some interest in the Forum thread ‘Crossroads’, which was set in a similarly weird bar. We had a lot of fun there. Can’t find it now, but it is probably somewhere among Forum Memories?
And on a slightly different note of SF and F writers with weird senses of humour, was it Isaac Asimov who wrote a book about Limericks?