"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"