Waning Gibbous

What is it called when a smile erupts upon hearing a story of H2O molecules detected in the debris of a crashed probe signaling the possibility of life on the moon because your mind makes the leap from that scientific discovery to holding his hand under a moon, two-thirds full in the mid-morning sky, and you wonder which lunar phase looks like an oval handkerchief not quite tucked into a pocket, and then remember him say, A little bit in, and you suppose, that’s a good name for it?