In the context of Martial Arts, to practice in a way that more resembles a Role Playing
Game than an actual fight, and/or to overdo it with terms from other languages, elaborate costumes, etc.
One
may LARP as a Samurai or
Ninja (Aikido, Budo Taijutsu/Ninpo), Buddhist monk (Shaolin Kung Fu),special forces soldier (systema, various forms of "street self defense), even a member of another culture in your own country (52 hand blocks).