I read in a FAQ of lucid dreaming somewhere, or maybe even read it here, that when you are in a lucid dream, and have control you can meet up with one of your friends and help tell them that they are dreaming aswell? What does this mean? that if both people are dreaming in real life, you can meet together in the dream and talk to each other w/e? and wake up and both if both of you recalled it would remember they were in the dream together?

I personally dont believe that can happen. To crazy!