Here are a few Austrian ones:

“Häferl” (Cup): someone with anger management issues

“Du rüttelst am Watschenbaum” (You are shaking the slap tree): I’m close to deliver the fruit of said tree to you.

“Ohrwaschlkaktus” (Ear cactus): Someone with large, protruding ears

“Saubauch” (Hog belly): A way of telling someone that they are fat and dumb at the same time. But in a nice way.

Băga-mi-aș pula-n coliva mă-tii de să-mi sară coaiele din bomboană-n bomboană

This is a highly niche one in my native language as well, as one must also know what is colivă - it’s basically a desert that we eat at funerals with m&m-sized candies in it as well. So it roughly translates let me stick my dick in your mother’s coliva so hard that my balls jump from candy to candy

French Canadian here

All of our swear words are Catholic church vocabulary words. As a never Catholic I always find them hilarious when I say them. They can basically be used as stand-ins for words in the same way as we use “fuck” in English or strung together.

“Saint Ciboire” was my grandmother’s favorite when I would fuck something up.

baptême [ba.tae̯m]: “baptism”
câlice [kɑːlɪs] (calice): “chalice”
ciboire [si.bwɑːʁ]: “ciborium” or “pyx”, receptacles in which the host is stored
criss [kʁɪs] (Christ): “Christ”, or crisser, a more emphatic version of sacrer, both verbs meaning “to curse”
esti [əs.t͡si], [ɛs.t͡si] or ostie [ɔs.t͡si] (hostie): “host [cookie]”
maudit [moːd͡zi] (m) or maudite [moːd͡zit] (f): “damned” (or “damn”)
sacrament [sa.kʁa.mã] (sacrement): “Sacrament”
saint [sẽ]: “Saint”, added before others (ex. saint-simonaque, saint-sacrament, etc.)
simonaque [si.mɔ.nak] (simoniaque): from the sin of simony
tabarnak [ta.baʁ.nak] (tabernacle): “tabernacle”; typically considered the most profane of the sacres
viarge [vjaʁʒ] (vierge): “the Virgin Mary”
Moïse: Moses

That’s not exact:

• Me cago en tus muertos = I shit on your ancestors / I shit on your dead relatives.
• Me cago en todos tus muertos = I shit on all of your ancestors / I shit on all of your dead relatives.

And in the theme of insults from Spain, a loaded one is also: Me cago en tu puta madre = I shit on your fucking mother / I shit on your whore mother

See, the thing with “puta/puto” is that it literally means “whore”, but it’s used to empathize cursings just like “fucking” is used in english. We’re even misusing it by putting it before verbs, imitating it’s use in english.

Greetings from Poland.

“bambaryła” - someone who is very silly. Also: someone who is very fat. A little old-fashioned.

Not that it’s untranslatable, but I enjoy it quite a lot.

Поцілуй бузька в калатало - go kiss a stork on the knocker.

If you ever heard storks, you’ll recognize the dismissiveness of this statement.

Gea mor net af die Kondl. “Don’t step on my milk jug”. You’re annoying me and you better shut up or go away.

Konnsch mor in Buggl oirutschn. “You can slide down my back”. I don’t give a fuck.

German dialect from Tyrol.

Portuguese is full of these, but how about vai pra casa do caralho.

Which roughly translates to “go to the dick’s home”, basically another way of saying “go fuck yourself”, but even more vulgar somehow.

Calling a male a “nephew” in Chinese 契弟 kai dai is calling them a male prostitute.

Usually it doesn’t mean target male has actually been used sexually, but commonly used for general belittlement.

This term comes from ancient times: Traveling businessmen who would take a young boy with them for sexual use, but if anyone on the road or destination asked who the boy was, the business man would euphemistically explain “He’s my nephew”

契弟 kai dai is commonly translated as “nephew” but it means “adopted brother”

In Tamil: சோத்துல உப்பு போட்டு தான தின்ற?

Translation: Don’t you add salt to your food?

Context: This is when somebody doesn’t react/listen/change no matter how much they are insulted. The other party asks if they add salt to their food, or if they only eat bland food, and thus have lost all emotions and have become as bland as their food.

It’s a bit difficult to explain, but the general belief is that food reflects your emotions and reactance and moods. Bland food - emotionless, spicy food - easy to anger, etc.

German Korinthenkacker (currant shitter) is someone who tries to win an argument by looking at unimportant details.

Argentinian here, I find very funny that a while ago somebody decided to express frustration saying la concha del pato or la concha del mono (lit. “vagina of the male duck” or “monkey”). Yes, the absurdity of a male animal with a female organ seems to reinforce the obscenity somehow.

The disapproving and insulted look of a Canadian when you’ve done something so stupid that they can’t even apologize for it.

It’s when there’s no apology or jokes, just the look, that you know you’ve become the stupidest fucker north of these here prairies and bears ya know.

“Enculeur de poules mortes” which basically means dead chicken fucker. It’s translatable but sounds so much better in french.

My favorite has to be zkundyksicht, it comes from “z kundy ksicht” which literally means “a face [that came] from a cunt”. “Z” = from, “kunda” = cunt, “ksicht” = a rude way to say face.