I believe that the reason some people advise against performing or recording humorous or novelty songs is that you may find it a millstone around your neck a few years down the road. If it happens to be a good one or gets lots of airplay, you will be pretty much forced to perform it when the humour is long since gone for you. EG, "Alice's Restaurant".

One curious phenonmenon I have seen is the singer who sings all sad songs, mixed with absolutely hilarious stories. Two Canadian singers who do this are Garnet Rogers and Lynn Miles. In effect, their songs are the straight men to the jokes. I've always wondered why they couldn't get some of the humour into the music. But the net effect on the audience is interesting.

Abrazos all around!

W-O