Timothy Paradox

I was on the roof of a skyscraper. I think I was trying to walk on top of a kind of crane hanging off the building? Suddenly the crane collapsed. I tried to hang on, but the whole thing came down. I fell down the building, but waaaay faster than terminal velocity. It felt like a thousand kilometres per hour. Then I smacked into the ground. I could feel my legbones reaching past my ears, which was definitely not good. Oddly, the "anti-gravity cushion" that normally prevents me from falling to my death in other dreams, failed me!