dungeon masturbating 

A mix between the words dungeon master and masturbating. This is used in a game of Dungeons and Dragons when the dungeon master kills the party with a powerful monster then creates a powerful NPC to kill that monster. The dungeon master is essentially playing with himself.

After he killed the party, our new dungeon master began dungeon masturbating with his new NPCs.

dungeon masturbating by JSeed02 March 18, 2019

dungeonmasturbating 

Noun. The act of playing a table-top RPG by oneself.

Verb. To dungeonmasturbate.

I showed up to the session early and when I walked into the basement I caught him dungeonmasturbating.

dungeonmasturbating by HardcoreMandolinist December 23, 2022