Definitions by Hadi Poker Face

Mass Erection 

When someone sends a NSFW message in a group chat, it causes "mass erections". It's basically a lot of people getting erections at the same time due to the NSFW message/post.

-Chat admin: NSFW materials are prohibited in this chat, please refrain from sending media that will cause mass erection in members.

Mass Erection by Hadi Poker Face August 12, 2017