its a floaty, slow motion type feeling. Kind of like the feeling you get from taking some antihistamines like benedryl. another way Ive explained it to a friend ride an elevator when you go up or down and the elevator has just stopped - you know that feeling where your body still feels like it is moving for a second even though the elevator is still. The same when riding an escalator that feeling during that split second that you stepped off the escalator and you still feel like you are moving. During all this you know logically you are not moving but mentally you're floating , or as your fried calls it drifting. Its this feeling that DID's get before or after they dissociate or as some people call it switching personalities. I call it being in my tunnel. Every time my therapist asked what it was like to switch personalities I could not tell her either. Up until then I never paid attention to how and why I dissociate. It took months of paying attention to how I feel when and what I was doing at the moment I started feeling this way in order to explain it to her.