dipstick /ˈdɪpˌstɪk/

• 1. 

  N-COUNT A dipstick is a metal rod with marks along one end. It is used to measure the amount of liquid in a container, especially the amount of oil in a car engine. (尤指汽车的)量油计

• 2. 

  N-COUNT If you call someone a dipstick, you are showing that you think they are very stupid or have done something very stupid. 蠢人; (做蠢事的)人 [表不满]

  例：

  Don't be a total dipstick, Dad.

  别干蠢事，爸爸。