DESCRIPTION
As they get older, the way they enjoy their time changes. Imagine an adult enjoying a song they've listened to as a kid and relish in every detail s/he might have missed, except that song also has grown and changed with that person, so there are even more details - new and old, natural or shaped by the person - to appreciate, with the new knowledge.
I also gave that meme "under-Frieren's-chin" angle a go, and it was a fun exercise. For the bottom panel, I had to lean back to my soft shading again.