When a group of friends from college or high school who haven't talked to/seen each other in a long time all comment on a mutual friend's Facebook status, usually about something they all agree on or feel strongly about.

Being forced to work in close quarters or cramped spaces with other people where privacy is unattainable.

The act of going out in public with a bald head that is normally covered by some sort of cap, hat or other head covering.

The act of lurking just outside the bathroom door when another person is using it, usually accompanied by some attention-seeking noise or behavior, ensuring that that person will acknowledge your presence and hurry up.

A psychological state characterized by one's excessive push-in push-out of his or her retractable pen; due to stress or boredom.

A shortened form of "What the fuck do you mean?", largely used when the person using the phrase takes a comment in a negative way.

Someone who gets their ideas, opinions and values exclusively form society and from others as opposed to getting: an idea from within oneself; a value from a personal rational process; an opinion from an experience.