Disappointment

When you have a shitty day, with people cutting you off and spewing unrelated information at you instead of listening to and answering your question, and everything taking ten times as long as it needs to, and air conditioning so cold you leave the building with a sore throat, and through it all it's nearly a hundred degrees outside, and on the drive home behind the asshole who insists on going 10 mph below the speed limit you decide that even if you can't have a slice of pizza or a submarine sandwich or really anything that you'd like to have for dinner when you eventually get home, as long as you can have a little chocolate cake you'll be okay, and then you get home and mix up your Betty Crocker GF chocolate cake mix and wait for it to bake and wait longer for it to cool and it has exactly zero flavor - that's disappointment.