Tell me, how is maniacal laughter written?

So it's been awhile since I posted such things, and all the things I have written in the past I have lost. But recently, when reading a few stories I have found that the usage of maniacal, insane, or diabolical laughter vary. So tell me, and I'll probably have to write a new language and replace the word laughter with it, but how is it written, or how should it be written?<br><br>&#x200B;<br>edit: thanks guys, didn't expect so much enthusiasm, so here's my solution: I'm unsure how I'm gonna spell it, but I have decided to pronounce it similarly to, "gishing wical", and with noises such as "giggle snorts" or "giggle yips".