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2.
Part of a trace program. It's designed to disrupt your input/output signal so your location can be pin-pointed.
You take the red pill, you stay in wonderland, and trip your balls off.
by DrAlbertHofmann January 21, 2005
 
1.
"This is your last chance. After this there is no turning back. You take the blue pill: the story ends, you wake up in your bed and believe whatever you want to believe. You take the red pill: you stay in Wonderland and I show you how deep the rabbit hole goes." - Morpheus, The Matrix

'Red pill' has become a popular phrase among cyberculture and signifies a free-thinking attitude, and a waking up from a "normal" life of sloth and ignorance. Red pills prefer the truth, no matter how gritty and painful it may be.
"I took the red pill"
by ironuckles October 29, 2004
 
3.
To open someone's eyes and mind to the secret truth of something important.

A reference to the film The Matrix, in which Neo takes a red pill to learn the ugly truth about his existence.
I have no idea what's really going on here, man, and nothing adds up. Redpill me here.
by Pig-Iron May 14, 2013
 
4.
A person of suicidal nature that may take the lives of others. Tends to live with parents although banished to the basement.
Man, you see that dude in the news, he killed 40 people and then put his head in the oven, what a redpill...
by ITH February 10, 2006