I would love to. I almost got the point where I was brave enough to do it before I switched to seeing T in his own practice. He has an office setup with desk and chairs so floor-sitting is not an option anymore
To expand on what a previous poster said I would like to sit on the floor precisely because it would feel childish - free and openly uninhibited childish. I feel very much like a child in a lot of situations, but I'm ashamed of that and I hide it. I can't grow those parts of me if I continue to hide them...
T does have a children's room in his office. Maybe one of the days I'll get brave enough to ask if we can have a couple sessions in there...

Eta: Now that I think of it I do manage to sit in the chair rather like a child might - curling up, then wriggling and twisting and sitting sideways with my legs over one of the arms... Wonder if I try turning upside down with my legs over the back...

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