LARPing
From Super-wiki
LARP stands for Live Action Role Play, and involves participants taking on characters from canon and act out game play in the real world.
LARPing features on Sueprnatural in
- 4.18 The Monster At The End Of This Book - where the comic book shop guy mistakes Sam and Dean for LARPers
- 5.09 The Real Ghostbusters - Demian and Barnes and the other fans at the Supernatural convention take part in a LARP.
- Live action role-playing game - definition on Wikipedia