Billy Connolly mentioned 2 hilarious things about swearing, which are:
Jesus Suffering Fuck, which he thinks is the funniest way to invoke Christ's name. It has all sorts of weird connotations, and can be as funny as anything.
The words getifu and basa, when used loudly and put together, can sound rude, but are only made up words which don't mean anything. Best to use them when you are drunk, as in 'Getifu, you basa! Garn, getifu!'