The gift needs to be able to come off as a genuine gift so there’s some plausible deniability…
Edit: Just so it’s clear, this is purely hypothetical. I just thought of the idea and thought it would be funny to see what a random person on Lemmy might think. This isn’t a serious request and none of the suggestions will ever actually be used.
The best way is the one where you know lots of (not so well-known) context and circumstances, and then it can work as an insult, but you can deny some of the knowledge and therefore you can appear innocent.