I just really like these kinds of comparisons, because it gives people a way to visualize the weight they lost. If I look into the mirror, I don't see any difference, ever. Just see the same old fat person.
But I just checked, and I am up to a newborn calf. And I've seen more than one newborn calf in my life, so I was just like 'Wow, that's a LOT! And that was all on me??'