One time I smoked some weed with this fellow from Cambodia. We were in his house and , for some reason, I went and sat at the other end of the house from where he was sitting...I just felt more comfortable over there.
I remember looking at him and he looked like he was floating off the ground, in a cross-legged position.
It freaked me out so much I got up and ran out of the house without saying goodbye, and ran all the way home...about 3 blocks away!
Now, I don't know if this is what actually happened or it was just the weed...but it certainly was a freaky thing to witness, whether imaginary or otherwise.