An activity that is enhanced by lighting up a blunt beforehand, during, or immediately afterward. Appropriate situations include celebrating a major sports victory, finishing a semester of school, or seeing a movie in 3D. Should not be confused with a jointivity.
The group of friends were about to see Tron 3D, and quickly realized that they were about to partake in a bluntivity.
by Bowl Ripping Duck January 04, 2011