Check it out in my thread, if you do not mind. I do not want to hijack poor Tal's thread.

JERK: 1jerk
Pronunciation: 'j&rk
Function: noun
Etymology: probably alteration of yerk
Date: 1575

4 : an annoyingly stupid or foolish person

"You don't throw a whole life away just 'cause it's banged up a little" Tom Smith in "Seabiscuit"