Definition of jack around

The phrase "jack around" is believed to have originated in the mid-1900s as a slang expression in African American communities. The term "jack" has some complexity to its etymology, but in this context, it refers to a "mischievous and impractical person" or someone who behaves in a careless or reckless manner. The term "jack" itself has a long history. It comes from an Old French word, "jac," which was originally used to describe a simple lifting device in carpentry. The word made its way into English as "jack," and over time, it has taken on various other meanings, including a male given name and a slang term for menstrual cramps. In African American vernacular, the usage of "jack" evolved into being associated with foolish or impractical behavior. The exact origins of this usage are unclear, but it may be related to the realization that a "jack" can easily become a "jackass" (another slang term associated with foolishness or impracticality) when their actions become overly careless or reckless. The term "jack around" is used to describe forgetful, careless or reckless behavior that results in wasteful or frivolous use of time or resources. It is an informal, colloquial expression and is widely used in American English, both in formal and informal settings.