First, I fully regret being the person that mentioned the gelatinous cube and tripping example. No good deed goes unpunished.
Second, while all of the jello and snail examples are fun, I do think people are mistaking the ease of turning over a piece of jello with a 10' cube. Not only in terms of size, but in terms of weight. If the gelatinous cube is as light as water, then it weighs over 62,000 pounds.
If it was the same as Jell-o, however, it would weigh a little over 39,000 pounds. And have a 10'x10' base. Just ... pointing that out.