I bestow upon you the Rory Award in the British Person Category for "The Most Gratuitous Use Of The Word 'Psyduck' In A Serious Screenplay." Take a bow, you earned it.
... and sadly I am without a microphone, so I couldn't be a competitor for the title. Dang it.
I think gratuitous isn't exactly the word you're looking for when the question is literally asking about swearing if I am to understand to meaning of the derivative Americanism 'cuss' correctly. Once you get me going I'm practically a sailor but this is a child friendly forum so...