In other conversational environments, if someone said "'deceptive' is a pretty terrible word to use for trans people" and "gwern, what a disgusting thing to say," it might have sunk in that they were serious and you wouldn't have later felt blindsided?
Oh sure. For example: if someone says 'what a horrible thing to say' while simultaneously smiling, you would have to have Aspergers or something to not be certain that they were playing along; while if they furrowed their brow and frowned, it might be a good idea to immediately backtrack or alternately make the joke sufficiently outrageous that they'd realize that you couldn't possibly believe that and were joking.
(Definitely one of the disadvantages of IRC, although in general I find it a very congenial environment.)
Definitely one of the disadvantages of IRC
Huh, that's what emoticons are for.
If it's worth saying, but not worth its own post, even in Discussion, it goes here.