Bluepilled: someone who is naive and believes the world is all fair. Based on the movie "The Matrix" where everyone believes they control their own fate and is a much more comfortable viewpoint of life. A guy can get a girl by being nice and respecting women.
Redpill: You need to put lots of effort to get girls, being a "nice guy" will not get you laid. You need to hit gym, have confidence, look good, try alot, and do everything possible to get laid.
Blackpill: You are a genetic failure. Natural selection exists and you are a victim and you will never get a girl no matter how much you train, try pick up artist tricks, or try to look better. People will treat you like a roach because you are ugly, look at the paragraph under this in my post, aka my signature. Even your natural bodily smell is considered unattractive. It is a more intense version of redpill. Its over.