The opposite of a Silly Goose. An angry muffin will become upset for a number of trivial reasons. Including (but not limited to) being the last to sit down in musical chairs, being tagged as goose constantly in “duck, duck, goose”, and being tickled by their mother in front of classmates.
“Jonovan was plum sick of all the malarkey transpiring in his classroom. Thus why he became an angry muffin quite quickly!”
While our lifespan is the number of years we will live, our healthspan is the number of healthy years we will have and our sexspan is is the number of years we will continue to be healthy enough to continue having an active sex life.
A lighthearted reaction upon receiving disappointing news of some sort. Usually something that isn't a particularly a big deal, esp. when it primarily affects someone else - sort of a mild schadenfreude. Sometimes doubled or tripled, and possibly said in a sing-songy voice for added comedic effect to imitate a muted trumpet, which is how the meme originated.