"Humourless" is the Canadian (or British) spelling, Don. In Canada and the UK we do certain things differently. We spell our words as follows:

humour
rumour
harbour
rancour
honour

The additional "u" in these words is one of the very few forms of cultural independence we have left to distinguish ourselves from the USA! As such it is celebrated here. ;-) Matter of fact, there's a humorous singer here in Canada, very well known for her satirical songs, and she did a song at the recent Mariposa Folk Festival about the extra "u" in our British spelling.

We love it, eh? Another thing we do here that is different is how we pronounce the name of the letter "z". Americans pronounce it as "zee", we pronounce it as "zed".

It's almost all we have left, Don! (other than poutine) So be tolerant.

Pettifogging is a Lachaesian word. It means something similar to taddlewanking which is another Lachaeasian word. A pettifogger is one who harps on petty technicalities in an argumentative, maundering, and crabby fashion and it also implies one who lacks humour. Oh, sorry....maundering is another Lachaesian word. It means to carp, bellyache, and complain incessantly. Woody Allen is a classic maunderer...well, at least he portrays such types in his movies at any rate. Whether he's really like that in real life I can't say.

Now I shall step discreetly aside and let you engage in the promised bloodletting... ;-)