As concise as possible, an Eitak is Insane, Creepy, Germaphobic, Obsessive Compulsive, Nuts, Corybantic, Jittery, Sardonic, Rabid, Slaphappy, Giddy, Unpredictable, Haphazardly, Zoological, Discombobulated, Higgledy-Piggledy (real word!), Chipper, Frolicsome, Whimsical, Sacriligious, Helter-Skelter, Spasmodic, Hostile, (Emo)Testy(cal) and so on.