Buttons.

If someone were ever to tell me that buttons were meant to be pushed, I would get very upset with that person. Some buttons, that are can most certainly be labeled "DO NOT PRESS" and those are ones that one should not touch. Others, are only authorized to be pressed by specific people, and others yet, are meant to be slowly forgotten about. Everyone, however, has their collection of buttons.
Buttons are made when a situation happens that makes a certain subject, difficult for one to talk about. For some, when someone pushes their buttons, they become enraged and can be very vocal about whatever instance or idea was brought up. For others, the subject which was under the button pressed was something very saddening for that person and they become very distant. Regardless, with any button that was pressed, it typically ruins that individual's day. The people who go out and purposely try to press people's buttons, are terrible people. They have no idea what kind of day that person has had, and even if they think they did, what right do they have to attempt to ruin their mood? 
However, buttons can be pressed by accident. For example, when arguments arise between two people, specific buttons are found to directly hurt a person, and often, these buttons have cobwebs and have been left alone for a while, making them hurt more when they are pressed. Another time that this happens is when friends are joking around. Things are brought up that are truly intended to be laughed over, but sometimes press buttons that one did not realize had been formed. 
Now if someone pressed one of your buttons unintentionally, it is important to forgive them quickly. In most cases, they will feel awful for doing anything to upset you, and deserved to be forgiven. But in other cases, where they intentionally press certain buttons to make you upset, they have no room to be in your daily life. Buttons are formed all the time, but in order to protect yourself from button-pressers, try to get over situations as quickly as possible. Everyone has buttons, so know that it is okay if someone presses some of yours, and also be aware of what you say to others. Be sure to reference my post on sensitivity regarding that whole situation though.

JSL