A term to describe a given situation in which a given person steals someone's "swag", or their trademarked coolness. The term has been made famous by Jenna Rose, a twelve year old skinny white chick, in her infamous song, "My Jeans". In the song, a girl (most likely Hannah Montana, Ashley Tisdale, or Keke Palmer) wore jeans just like Jenna's, to which she responded "jack my swag".
by huneygetsit April 17, 2011