This isn't really a profanity so much as just a basic declaration of frustration, but I like to shout "ARGLEKABARGLE!" Now of course I can't rightly remember what character and what context, but I took it from Stephen King's novel "The Tommyknockers."
I also speak fluent Nadsat (You get a cookie if you know what this is from the very second you read the name.) and so some insults (Only one is really a profanity though.) I like come from it, such as:
Bratchny (Bastard)
nadmenny shoot (Arrogant fool)
Gloopy droog (Stupid friend)