what are some non-English (or obscure English) retaliatory insults?

cross-posted from: https://hexbear.net/post/2688493

i live in a predominantly white area so i get some racially-motivated and provocative comments from time to time

i just ignore them with a clear look of disapproval (+ sometimes a side-eye) because i don't have the time to educate every single random stranger and it's just not something i want to bother myself with (though i know i should to an extent).

i feel like replying with an insult that they won't understand would make it very clear that i take offence with that they said/did without them reacting to what i actually said and would make me feel better that i retaliated rather than keeping quiet.

(plus responding to an ignorant comment with something they'll be ignorant of feels pretty retaliatory to me)

so what are some non-English (or obscure English) retaliatory insults? ideally they should be a common insult (though it's optional ig), short and should sound like an insult to an English speaker

EDIT: to clarify, i'm not concerned about further escalations as virtually all of these exchanges happen in passing where no one is able to continue the conversation (which is why i'm okay with responding in a potentially rude way).

but maybe ignore the last point about the insult sounding like an insult. saying an unknown phrase in a different language should be enough to suggest my disapproval