i'm don't lie, but i don't make a big deal out of what we do- i tell people who ask that he doesn't sleep through the night. If they ask, i tell them his crib is in our room, or even that its side-carred, but i rarely tell people we co-sleep. It seems like its easier to let them imagine what they want, if they are like minded, they usually ask me more pointed questions. With my old ped, i told her my son woke several times to eat and at the time i was a student and it was very necessary for him to eat at night and she never asked about sleeping arrangements, so i didn't volunteer. Next week, we go to our new ped (b/c we moved in december, and i now sah) and i am going to go slow, volunteer as much or as little as seems appropriate.
