People like to laugh, a funny song will make people laugh. Remember Shakespeare? " The plays the thing!" The performance is the thing. And more than performance. Sincerity, even in a funny song , is very important. And what is a funny song? Are we talking Belly Rollers? Shaggy Dogs? Puns and groaners? or Steady grins? There is always someone in the crowd who is totally new so the song will odds on be totally new. Its my experience that a steady grin will last longer in the set list than a belly roller. And a song that requires audience participation will last longer still. Examples: Stan Rogers "Two Bit Cayuse" is a grinner, " The rattlin' Bog" is an audience song. " The Sick Note" may be a belly roller to some and loose its usefulness quick. Some songs are tragi-comic. Listen to Gordon Bok do "The Mountains of Mourne". I smile thru bleery eyes everytime. I guess it takes more than a funny song to be funny. A wooden performance of a funny song will sound flat. I guess this topic isn't as easy an answer as I first thot. Good luck with it.

Don