Someone of a petite stature who has no control over any of their physical or emotional attributes.
Not to be confused with being bipolar, this is someone who holds the utmost animosity to anyone, at any time, for any reason.
Usually very unjust.
I told him that the answer was really 5 instead of 4, when all of a sudden a Wilichinsky came out of him and he almost killed me. I was just trying to help.