Bet your parents never warned you not to meditate in a dark room at night, or not to read Rumi right before. This combination might make you curious about the effect twirling rapidly could have on your meditation. Well, they should have warned you, especially if there's some window glass around.
I'll have an interesting post later on about emergency rooms in early morning, about how total lunatics are viewed there and about writing blog posts with one hand. When the novocaine wears off.