To keep a girl/guy on the side to have sexual intercourse later, because she is not eligible to play for whatever reason . Usually, because she/he is underage by a few months.

Sort of like a red shirt in sports.

Also spelled RedShirting, Red Shirtin, or RedShirtin
"Tyga is red shirting Kylie until she turns 18"- an interview with Charelamge on VLAD TV about the subject
by subZOOM February 4, 2015
Get the red shirting mug.
A character in a science fiction or adventure story whose sole dramatic purpose is to get killed by the story's villain and/or intinerant monster.

Taken from the propensity of security officers on the original Star Trek series (who typically wore red uniform tops) to be killed in the epsiodes' pre-opening-credits teasers.
Methinks Lt. Jones is doomed to be just another red shirt.
by DrAstroZoom January 12, 2004
Get the red shirt mug.
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.
Thats a good idea but, corporate is sure to red shirt it.
by Brush September 24, 2006
Get the red shirt mug.
Walk on player to college team, on team, does not play in games for one year to save a year of eligibility.
Even though the red shirt running back is the better one, he doesn't play because he is a red shirt; if he plays he'll give up a year of eligibility.
by Diction Ary November 1, 2003
Get the Red Shirt mug.
A Navy term used to describe a person who's job is in Aviation Ordnance on an aircraft carrier flight deck. An ordnanceman.
If you see the 'Red Shirts' running, keep up.
by dal January 27, 2006
Get the red shirt mug.
In college athletics, a red shirt is a player that is on the team, but hasn't played in a game yet.

One of the previous posters is incorrect about red-shirts being walk-ons. Scholarships players are red-shirted all the time.
Johnny was given a scholarship to play quarterback, but was told by the coach that he would red shirt his freshman year until he learned the system.
by zman911 January 14, 2009
Get the red shirt mug.
When you find a hottie but you know they are not of age (18 -21yrs old) so you wait but flirt with them heavy just so they know they can get it... Usually done by older guys who want to avoid the law...
Mans he looks hella good

Yeah but she got to be red shirt for now till her birthday in a month... Booty young girl tyga kylie
by namebrand05 November 23, 2015
Get the Red shirt mug.