Any Friday is Red Shirt Friday. You should wear a red shirt, if you forget there is always next week.

The term Red Shirt refers to security personnel from the USS Enterprise in the original Star Trek series, sent along on Away Teams, presumably to protect the more familiar characters. Unfortunately, they usually just ended up being killed, often times off-camera, by whatever was menacing the ship and crew in that particular episode. Thus, to suffer a Red Shirt Death is to be killed quickly, pointlessly and ignonimously.

An alcoholic beverage made in a high ball glass with Cocaine Energy Drink and Vodka.

A Red Shirt Freshman is a student on an NCAA college sports team who was kept out of competition for a year in order to prolong his or her eligibility. Usually this is done to allow the student to be a "part" of the team in terms of learning, healing from injury, and/or conditioning, but not a participant in any of the contests/games/meets/etc.

The following year, they begin their 1st of 4 years of eligibility, or their "freshman" year of eligibility, even if they are sophomores in terms of academics.

n. A character in a science fiction show, who dies soon in the episode. This character often acts nonchalant or sometimes even cowardly. Often their name is only mentioned in passing, or are given no name at all.

Taken from characters in Star Trek who wore red shirt/jackety things.

In star trek episodes,the expendible crew member who always dies wears a red shirt .so that it has come to mean the failure or defeat of an idea or action.

A bouncer at the Longbranch in Saskatoon, Saskatchewan

ALSO

What to say when an undesirable person is bothering you or a fight has broken out at the Longbranch in Saskatoon, Saskatchewan