Hungry? Try our fine selection of monstrous creatures! Bugbears with spiny lobster, dopplegangers...
It's very easy to do. Highly irritating creatures, both. But you you should take every care not to. The fae are made from psychoactive materia, and so there demeanor will reflect--like from a funhouse mirror--whatever emotions you porject onto them. A Kiidini, on the other hand, can't take the stress of your anger and will be triggered to enter metamorphosis into an ukiidini. As irritating as a Kiidini is, they seldom rip people's heads off.
Oh my ripping heads off is no good! I must try try to figure out this language.
From what I can tell, "u" (oo) is an intensifier. However, Kidini is a just a name, or at least is only a word in Kathallian, the dialect of their species.