Oddbean new post about | logout
 Why people say GM?  
 Have you tried to do some research? 
 Is it hard to just explain with a few words?  
 Not at all, but harder than doing a web search.

It stands for Good Morning, so the reason people say it is to wish each other a good morning. 
 Okay. A simple explanation that did not need to say all that was said. Brom tanks