1. A person of mental stupidity in the throws of doing something extremely stupid and commonly hilarious
. This state and reputation is more often than not, bought upon by the consumption of exotic substances.
2. If said when hitting the forehead with the palm of the right hand, it means smacky
. This definition is not known to the general public, but was developed in elitist circles of the Australian drum and bass underground.
Girl 1: PLURRR. Would like like this XTC?
Girl 2: (/hits fore head with palm of right hand) Is it spackie?