A trained noob, is a noob gamer who has been trained by a pro gamer. Since pros and noobs have different brain chemistry, the trained noob will never be as good as a pro, but might do very well against other noobs.
You can train a noob, but he'll only be a trained noob, he won't really be pro like me. You got to have something different, its like in your head, and in your eyes and stuff.
Trained Noob is a name given to a noob which has been trained thus making him/her better. A noob can not pass the stage of trained noob if he is beeing trained. Ask a great man once said "You can train a noob but he'll just be a trained noob."