I'm not fond of that kind of joking. I used to bake a lot, and bring things to the office. Most of my coworkers were nice about it, but I had one coworker who told me she hated me every time I brought something in (usually she'd say it while she was grabbing a treat, but sometimes she'd email or call me to let me know).
Even though she was joking, I got tired of hearing it. It's not really clever or cute to tell someone you hate them, or that others do.
My mother tells the story of a housemate she had once, who for a period of weeks, would say the same thing after supper. "You know, [Mom'sname], I've been thinking about this. I've been giving this a lot of thought, and I've decided that I like you." Mom knew she meant it, and was being goofy.
Then, the script changed. "You know, [Mom'sname], I've been thinking about this. I've been giving this a lot of thought, and I've decided that I don't like you." Still said cheerfully and kindly, and Mom knew she was kidding, and it was all okay.
Except that after the fifteenth repetition or so, the way Mom felt about said housemate changed a bit. It started to sting a little, even though intellectually Mom knew that Housemate liked her very much and didn't mean a word of it.
Mom still finds her view of Housemate coloured a little by this, nearly fifty years later.
As a result of hearing that story, if I do say something negative to someone as a joke, I make sure not to make that kind of joke more than once. Better yet, I try not to do it at all.
That story is also the reason I call myself "sweetheart" instead of "idiot" in self-talk when I've done something I don't appreciate. /end threadjack