The word plurnt was invented by Flosstradamus and is used by other DJs such as Diplo. It is a movement to bring plur (Peace, Love, Unity, Respect) to the hood.
plur + turnt = plurnt
Plurnt also has acronyms such as:
Peace Love Unity Respect Now Twerk
#Plurnt, Let's Get Plurnt, Getting Plurnt, Bringing PLUR to the hood