getting really high with someone and then releasing inhibitions and fully allowing that person to control your trip. e.g. show someone the world as you see it and through their eyes
Sunny got really baked so Leslie took her on a magic carpet ride.
Jenny and Jacob were so high that Jacob was able to take her on a magic carpet ride through his mind.
You can emulate this on a very rudimentary level by watching screen savers and having someone free associate aloud what they see for the other, thus shaping what the other person will see.