This is a term for the fusing of a list of expletives to make one long word. A super-swear should only really be three words or three syllables long to give it the optimum effect, any longer and it may not have desired effect. Almost any cursive word can be used in combination, however certain words do tend to have a better ring to them, e.g. CrapFuckWank.
"Ah, ShitFuckCunt, I've lost my wallet"
"Woah dude, that is one hell of a Super-Swear you just made up there"