a newly made religion where you emphasize the statement of ‘period’ when something is accurate or if you strongly agree with a phrase or action

Briefly, "the realization that each random passerby is living a life as vivid and complex as your own." Originally from the Dictionary of Obscure Sorrows, which has a lot more beautiful neologism definitions like this you might enjoy.

When you have a random hatred for someone then find out your periods are out of sink! this could be natural or just a reason to hate someone!
The periods must be out of sink for at least 5 days to be an official periodism

the symptoms of the period, in which they include: cramps, bloating, pimple breakouts, sore breasts, moodiness, migranes, sickness, constipation,diarrhea etc.