Nonny, I can count on one hand the number of times I have looked at headers of my own work after posting. I scroll right to the bottom. Half the time I don't even remember which things I've posted are gifts. This is what I'm saying, you are relying on a feature that isn't intended for this use and making wild assumptions about what other people will do or notice that I am dubious actually play out how you expect IRL, all so you can avoid having to either explicitly communicate distaste or suck it up and tell a white lie for the sake of the group activity.