jerk
n//ˈdʒɜɹk//spasm, ryckning, ryck, knyck, idiot, skakning, tölp, fjant
A sudden, often uncontrolled movement, especially of the human body.
(originally, North America, slang, pejorative) A person with unlikable or obnoxious qualities and behavior, typically mean, self-centered, or disagreeable.
(US, slang, pejorative) A stupid person; an idiot or fool.