Painting. I wish I had the money to take some classes; it doesn’t seem like something I’m likely to puzzle out on my own, at least not without spending even more money on materials. An expensive hobby. Even using the computer, it’s tolerably difficult and takes some getting used to.
The song whistled in panel 3 should be “Chinese Work Songs” by Little Feat. Somehow, I couldn’t find a YouTube track for this one, only a remix or the whole album. Little Feat is an eclectic jam band that formed in 1969, but, unlike most rock bands of that era, they managed to not destroy themselves, although the lineup has changed over the years. The album Chinese Work Songs was released in 2000. Their most recent album came out in 2012.
I guess what this comic is really about is the way a good mood can be so easily destroyed, like cotton candy when you dump water on it, while a bad mood is far more tenacious, like bubble gum stuck in your hair.