1.) An event which is a complete catastrophe/disaster, like your life 2.) A mod on Terraria
Person 1: Did you hear about the calamity yesterday?
Person 2: Yeah, it's a great Terraria mod Person 1: Stop playing Terraria you dipshit, people literally died!
Person 2: Oof
Calamity Mod is a Terrariamod that adds 31 bosses (Including Mini Bosses and Super Bosses.), it also adds:
near 800 items (as of now)
29 debuffs (as of now)
27 buffs (as of now)
Terraria mods are loaded in by using TModLoader, if you were wondering.
Either directly refers to a horrible situation involving mass ammounts of spam, or could be used to describe mail from AOL. Could also mean a large quanity of rather annoying instances.