Well, either learn to swear in an obscure language (Norwegian, Swedish, Esperanto) or make up your own curse words.
Shitake mushrooms.
Oh, Frap.
Son of a beech tree.
Sun on the beach.
And my personal favorite: Bless my paws and whiskers.
faen! (exclamation) = devil = "shit!/fuck!" [pronounced "fa-ahn", the a of "father"]*
faens - (adjective) = "fucking - "
helvete (exclamation) = hell [pronounced ca "hall-veh-teh" the a of "dad"]*
helvetes - (adjective)
jævel (personal insult) = devil [pronounced "ja-vehl" the a of "dad"]*
jævla - (adjective)
* h = indicates lack of typical anglic diphthong
dritt / skitt (pronounced shit, like "ski" is pronounced "shi"
)
drittsekk = shit-sack (personal insult)
fitte = pussy, kuk/kukk = cock, ræv/rass = ass:
fittetryne = pussyface (tryne = face of an animal/pig)
kuksuger = guess
rævhøl/rasshøl = guess
[Ø = the i of "bird" or e of "jerk"]
common expressions of anger:
faen i helvete! (expression)
jævla kuksuger!
you can even turn the above expression into an adjective, just cus:
faen i helvetes jævla kuksuger!
ponds from now on.