We all have our own unwritten rule that came across as very useful, and which would benefit others a well. What is yours?
This post may include affiliate links.
if a person is bleeding through their pants while on their period, let her know discreetly and quietly so they can cover it up/change it.
Also if they don't have a pad/tampon, give them one if you have them on you.
Never get in between an argument between siblings, they will both snap at you and its never fun