What is the most offensive insult in your language?

[Hrvoje Vukčić Hrvatinić]

Worst is curse involving sex and blood of dead Jesus. Sometimes I wonder how can my people be so brutally vulgar. There are many more.

[Crimean]

[Visage pâle]

french

I would never understand why so much hate from americans against french.

[Blondie]

Bazd meg = fuck off
Kurva = bitch
Geci = sperm, cum
Cigány = gypsie
Köcsög = gay and trash person
Buzi = gay
Fasz = dick
Faszfej = dick head
Seggfej = asshole
Szőröstalpú = pejorative word for romanians, it means "hairy legged" because they were mostly shepherds with hairly boots
Oláh = name of romanians in the old hungarian language, in 21. century it's mostly pejorative (means lower class people, gypsie assotiation) and hungarians don't use it in everyday language, just for insult
Retkes or mocskos = dirty
Drótos tót = pejorative word for slovaks, in the 19. century many slovak has worked as craftsman or guest worker and they travel across the richer central hungarian areas. It has no exact translate but it means "lower class people". The hungarian chauvinist use this and oláh word very often.
Kecskebaszó = goat fucker
Bokszosképű = pejorative word for south europeans, gypsies, arabs, turks it means "swarthy faced"
Fasszopó = dick sucker
Zsirdisznó = pejorative word for fat peoples
Csicska = weakly slave people

etc etc

[nittionia]

Where I live this is how you know you are in trouble in ascending order:

[Bolsonaro2018]

They use all of them here