Curse words are interesting because they are completely different depending on the country. I'll tell you some that come to my mind (Spanish from Spain) :) -> ¡Joder! (fuck!) -> ¡Mierda! (crap!) -> ¡Me cago en (word)! In Spanish you can "cagarte" en lo que quieras. Usually: Dios, todo, la puta, but pretty much anything. If you're struggling to open a bottle, you can say 'me cago en la (puta) botella'. You can use this to insult too: 'me cago en tu madre', 'me cago en tus muertos' and so on. Versatile, right? -> ¡Hostia! This is usually said when you're angry at someone. -> Adding "puto/puta/putos/putas" to eeeeevery word. It's the equivalent of the english 'fucking ...' There are a thousand more, but these are especially common I think :D

In Mexico City we use to say "Pinche ..." adding any noun you want: Pinche chamaco. I don't know what's the meaning of "pinche", but in my example "chamaco" is a colloquial and funny way to say "guy"

-Pendejo -Chinga tu madre -Vete a la chingada -Vete a la verga -Puto