I think part of the problem is in the conflicting definitions of the term, "jerk." I say we should pin down to a clear definition, and stick to it. I would use whatever meaning Ekin gives, since he likes the word so much, as long as it is consistant and coherent.

For example, my definition would include an element of simplicity, making the character (Snape) easily dismissed. This doesn't seem to work with Ekin's definition.

If the word can not be defined, even to Ekin's satisfaction, I propose that we skip it and use real words.