A state in which the battery power in one's iPhone dips to 20% or less, causing the battery icon in the top right corner to change color from green to red.
I'd better charge my phone. I've been playing Tetris for hours and now it's in the red!
by OneMileFromGlory April 27, 2014
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having an easily aroused and uncontrollable boner. usually happens a lot when you're adolescent teenager. all men can have it though at anytime.

also see N.R.B.
Guy #1: Why are you covering your crouch with your notebook?
Guy #2: Because man, I'm still in the red!

Guy #1: Aww man, Jen's coming down the hall.
Guy #2: Ah, shit! I'm gonna be in the red til the end of school!
by thephantomplatypus September 24, 2009
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Is the probe/mouse/player color, when you are playing a cat and mouse game on Starcraft that the computer keeps following only you. This joke was created after a two hour long game in witch things were assigned to each color.

God they are all following you”
“Well he is red after all
by Notcarter January 8, 2009
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Acronym for Raging Erectile Disfunction. More than 10 million men in America suffer from RED. Typical symptoms of RED include but are not limited to: getting raging boners for no reason; constantly having a raging boner; not being able to make your boner go away. Men with RED are not allowed to enjoy many aspects of life such as wearing sweat pants and peeing standing up. Argaiv is the leading drug to treat and control RED. Side effects of Argaiv include nausea, blood clotting, and gayness. Adults with high blood pressure should consult a doctor before taking Argaive.
RED is the number one cause of eyes being poked out in the world.

Fred: "Jesus Jon you have a raging boner"
Jon: "I have RED leave I can't help it!"
by wiggly22 November 15, 2009
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A great rock band with great lyrics and great music.
by bbtdgfan123 November 30, 2010
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-verb
1. Uncontrollable rage with no apparent catalyst; to strike someone for no particular reason.

-noun
1. A person with no control over their temper.
Verb: He just pulled a red on that guy and sent him to the hospital.

Noun: Look at that red wailing on that guy for no reason.
by Hunter S. Samson February 17, 2010
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