From the HuffPo

#1 Brag. This one can be broken into subsections, such as the "I'm living quite the life" brag, or the "I'm in a great relationship" brag.

#2 Be cryptic.  Post something that makes it clear something is happening in your life without giving out any detail.  Example:  "This could be a biggggggg day!" or "Ughhhhhhh!"

#3 Be literal. An actual update to your mundane day. "Off to the gym," is one example, or "Dumplings!"

See the entire list here