I said your good list my ass because I would never pay to be on his goodlist,
But it doesn't mean that. When you use "my ass" at the end or beginning of a phrase it implies you think that something disingenuous happening. As in the preceding or succeeding stuff is a bunch of lies.
E.G. My ass Obama will reduce government spending = I strongly don't believe Obama will reduce government spending.
Obama reducing government spending, my ass = I strongly don't believe Obama will reduce government spending.
That's what is meant by that phrase. If you wanted to say that you think its ridiculous to spend money to be on anyone's good list you could perhaps simply say, "Why the fuck would anyone want to be on your good list?" Which would be a stronger clearer rhetorical question. That would also have gotten your point across without appearing as a non native speaker swept up in rage over a social situation he clearly has no understanding of. Well you would still appear angry and ignorant considering you are getting pissy and combative in a board for joke threads and humor.
Anyway when did being an admin mean I had to be nice to shit users that get shit pissy over joke threads? You're the one who's been insisting on this little argument. Enjoy your day.