When you are overbearingly nice to people in chance encounters with friends and strangers alike. This is more of a you need to be friends with in a passive aggressive way.

If something is so nice that you have the urge to destroy everything around you.

When describing your (best)friend to people who are trying to say she's mean or violent and know she's a great person but you somewhat agree that she has violent tendencies.

When someone sends multiple one sentence text messages in rapid succession when they are pissed off and are trying unsuccessfully to vent, or are in a situation that makes them feel so uncomfortable that they somehow have lost the ability to communicate as an adult. They feel that their inherit righteousness is somehow above all others, and that their personal needs should be met immediately.

A storm in a teacup so to say