THINGY ( thing - ee ) n. Female : Any part under a car 's hood . Male : The strap fastener on a woman 's bra . VULNERABLE ( vul - ne - ra - bel ) adj .

Question: What can we deduce about this definition of thingy ?
Answer: It is a term mechanic 's use .It is a technical term .It 's a joke .None of the above choices .