In my last LD I remember realising I wasn't really touching the ground at all full stop, I didn't really try though. The realisation hit me when I was 'standing' next to some construction workers who were doing work on the second floor of a building, they were on a scaffold but I wasn't, I was just sort of zipping around as I watched and directed them with my mind haha.

I tried to touch the ground after teleporting to the top of a mountain, but the terrain was alien to any memory I had and even in the dream I was thinking 'I've never touched snow before, so how could I even imagine what it feels like?' So I guess I'm the opposite, unless I'm indoors I can't seem to touch the ground :p