A dreary mood due to someone's not phoning you when you'd expected or wanted him/her to.
In a classic "Miss Piggy's Advice" column in Muppet Magazine, a mid-teenage lad complains about how his main squeeze always suffers a major bout of melancallie whenever he isn't able to "give her a jingle" in the evening, despite his repeatedly having explained to her that he's a farmer boy and thus has chores that often prevent him from being free to simply sit and "yack on the horn" for half an hour. He finishes his message to said "sage sow" by indignantly asking her, "So what am I supposed to do?!" Being a selfish brat herself --- AND a fierce feminist --- said pink-skinned flat-nosed advisor unhelpfully snorts back, "You're supposed o call her." Some help SHE turned out to be there! :P
A less-than-cheerful mood due to abdominal pain, either because you're suffering it yourself or you're having to expend significant time and effort caring for someone else who's going through it.
Many parents become melancolic when their offspring have longcrying-bouts for no apparent reason.
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.
You didn't get any napkins with your takeout pork fried rice? Womp womp.
A phenomenon in film/television series, most notably streaming series, where the main premise is drawn out to such a point that it takes an entire season or more to get the parts of the series the audience is actually interested in seeing.
For example, if a series is titled "Surf Dracula," a majority of viewers would tune in expecting to see Dracula surfing by the first or second episode. However, the entire first season would instead be tedious padding and backstory before finally ending with Dracula surfing in the last five minutes of the season finale.
I watched "Smallville" on Netflix the other day. Dude, it was ten seasons of filler before he finally flew! Major Surf Dracula Syndrome!
Finding your way back to the truth by fixing on one verified fact and working out from there, the way you navigate by the North Star when everything around you is spinning.
Rumours were flying everywhere, so she went northstarring — one checked fact at a time.