When I was a kid, I had an effective way of finishing a milk shake. A straw worked for most of it. But when I got down to those final noisy slurps, I worked with gravity. Turning the cup upside-down brought last drops to me. But when that was over, I stuck my tongue in as far as I could to gather up remaining morsels. THEN – my cup was truly empty! Nothing left! Satisfying, but also disappointing. Sometimes life drains your cup. That’s when you feel empty. It can be satisfying, but also disappointing.