Skeletronism 

The one true religion, worshipping Skeletron from Terraria. You can challenge him by talking to the old man in the temple and our lord will smite you!

Person 1: are you religious

Person 2: I am, I worship the great Skeletron! I’m part of the religion of Skeletronism

Skeletronism by Frankel DDOS February 22, 2019

Skeletonist 

Skeletonist. Racist for Skeletons.

Person 1: Oh! I'm being Skeletonist! Is that the word? Oh dear lord..
Person 2: Chill! I don't think that's even a word!

Skeletonist by Cause I want to- June 15, 2017

Skeletonisim 

The act of being transformed/transforming others into a skeleton via magic or necromancy.

Reject humanity
Embrace Skeletonisim

Skeletonisim by King Calcium June 21, 2021