Du hast doch nicht alle Tassen im Schrank - German, you don't have all your cups in the drawer.

Telling someone he is stupid via comparison to cups. Why? Who knows.

"I piss in your mother's death"

Alternatively, "May Stalin fuck you"

And yes, I live in Eastern Europe.

"mange tes morts" in french, can be translated to "eat your deads" which is like go fuck yourself

"Te falta una patata para el kilo" (in Spanish)

English: "You're missing one potato for the kilo."

When you want to call someone a fool or an idiot, you question if they're in their right mind, if they use their head before speaking or doing something.

Pannekoek.

You figure it out.

German: "Du Lappen"

Translates to "You rag", pretty much calling someone a loser or idiot.

Probably "sluta vara en så lagom rolig person". It isn't directly an insult. However, it's not something you would love to hear. It translates to "stop being a person who has the just right amount of fun".

Another thing my friends say when they are med is: "Din jävla ångvält!" which translates to "You fucking steamroller!".
It just sounds much better in Swedish.

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"

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.

Oh, I've several. Irish people love a good curse.

Go mbrise an diabhal do dhá chois May the devil break your legs

Go ndéana an diabhal dréimire do chnámh do dhroma May the devil make a ladder out of your spine

Go n-imí an droch aimsir leat That the bad weather leaves with you

Go n-ithe an cat thú is go n-ithe an diabhal an cat May the cat eat you and may the devil eat the cat

And my personal favourite: Lá breá ag do chairde, dod adhlacadh May your friends have a fine day, burying you

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.

"Ge zijt a foorwijf"

You are a fair bitch. People working the carnival / fair scene don't have the best of reputation. In Belgium we had a song about this phenomenon and the real fair people were all kinds of angry about the stereotype. The thing is about stereotypes: it really has a base in reality.

Altough it's more like a "gypsy curse", but there's one that translates to sth like "I wish you'll having ten rings but none fingers"

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.

Brazilian portuguese tends to lack impactful phrases, but is full of single curse words. A big portion of them a clear example of how much negative bias there is culturally against certain groups (gay men, women in general, disabled), unfortunately :/

One that isn't often used, but that I almost always laugh loud whenever I hear, is "Enfia uma dentadura no cu e sorria pro caralho", which roughly translates into "Stick a denture up your asshole and smile at the dick". For when simply saying "go fuck yourself" isn't enough.

If you want to say that you don't care about something (as in: "I don't give a fuck"), in Serbian you would say: "My dick hurts". And that's an expression you'll hear almost daily. A less used variant of that, but still legit is: "My balls are beeping".

While not insulting, I'll throw in our way to say: "I'm/You're fucked". It's: "Jebao sam/si ježa u leđa", which means: "I/You fucked a hedgehog in the back"

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

Greetings from Poland.

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

I like the variant: "Me cago en tus muertos pisoteaos". I'll shit all over your treaded-on dead relatives.

I recently learned "Arschgeige" in German, which according to the reactions of people I asked, is a pretty mean thing to say. I can't get over the fact it literally means butt violin though.