A made up excuse to a woman that worked very successfully, which was ridiculous but her lack of intelligence made it brilliant . Also stands for synthetic pot, which does not show up on a drug test. Also a way to describe anything that was amazing or kickass.
'Man I told her that was my mother talking in the background when she call, Chickenfire!'
'Dude! let's go to the head shop to pick up some Chickenfire'
'Do you remember the girl from lastnight? That piece was Chickenfire!'