There's a difference, as you acknowledge, between recognizing humor/sarcasm and enjoying the particular joke or sarcastic remark.
Quite often, I would submit, posters here (including myself and Sammitch) are clearly using sarcasm or humor (my "you seem easily confused" joke being just one example) and you react as if you just don't understand that it was a joke in the first place. Conversely, whenever someone doesn't "get" one of your bon mots, you seem to quickly accuse them of being stupid.
You can't have it both ways.
u spelled humour wrong.
