In Brazil we have a whole collection of insults that we use in our daily lives. We use them normally, and we even say them as if it was nothing. Depending on the situation we even use them in formal contexts, and almost nobody notices. Many of these words translate to the same thing in English, but in Brazilian Portuguese they are different words with slightly different tones and contexts. Here are just some examples of insults that we use, we have many more:

Caralho - "Caralho, esqueci do compromisso"
("Damn, I forgot the appointment")

Porra - "Hoje está uma porra"
("Today is shitty")

Merda - "Fiz merda"
("I screwed up")

Puta que pariu - "Puta que pariu, que susto"
("Holy shit, that scared me")

Foda - "Essa prova tá foda"
("This test is really hard")

Desgraça/Diagrama - "Desgraça de carro"
("This damn car")

Foda-se - "Foda-se o compromisso"
("Fuck the appointment / I don't care about the appointment")

Fudeu - "Fudeu esqueci do dever de casa"
("I'm screwed, I forgot the homework")

Cu - "ele tá com uma cara de cu"
("He has a really grumpy / annoyed face")

Caguei - "Caguei para isso"
("I don't give a shit about that")

Viado - "E aí, viado"
("What's up, dude")

Burro - "Fiz algo muito burro"
("I did something really stupid")

Idiota - "Eu sou um idiota"
("I'm an idiot")

Cafajeste - "Ele tá todo cafajeste hoje"
("He's acting like a jerk today")

Pau - "Dei um pau hoje"
("Something broke today")

Pika - "Esse tênis é pika"
("These sneakers are awesome")

Buceta - "Buceta, bati o pé"
("Shit, I hit my foot")

Noiado - "Tô noiado com a prova"
("I'm paranoid about the test")

Inferno - "Que calor dos infernos"
("It's hot as hell")

Droga - "Droga, esqueci o carregador"
("Damn, I forgot the charger")

Filho da puta - "Algum filho da puta roubou meu lanche"
("Some asshole stole my lunch")

Arrombado - "Algum arrombado estacionou na minha vaga"
("Some jerk parked in my spot")

Otario - "Fui otário de confiar"
("I was dumb to trust them")

Vagabundo - "Tem um cachorro vagabundo latindo"
("There’s a stray / annoying dog barking")

What insults or swear words from your country are commonly used in everyday conversation?