This also works off of the Walk on tables glitch. Instead of having a fish, you must have a sofa or couch as the item you drop. And, you must have a 1x2 bed on the right side of the "runway". Now, do the Walk on tables glitch. Then, pick up the sofa and drop it. It should land as seen in the first screenshot, facing you. Now, just sit on it like you would normally and you'll end up sitting on the air, floating above the couch.