When someone is incredibly bored and sends the same text to many different people at the same time in the desperate hope of getting a response or when something important or at least important to the texter and it just MUST BE TOLD TO EVERYONE like merry christmas....or its my birthday.
When the text end with everybody or guys its probably the dreaded "mass text".
Lizzy: Holy crap!!! That hottie Bill just texted me!!
Erica: What did he say?
Lizzy: hey
Erica: I got the same one...its just a mass text. Don't answer that. He's just bored.
when you send a mass text from your iPhone and include people without an iPhone. If you responde it automatically replies to everyone and creates chaos.