A minute with an indeterminate duration. A metro minute could be 30 seconds or 30 minutes, and you don't know how long it lasted until it's actually over. Derived from the Washington Metro Area Transportation Authority (WMATA) metro train arrival times, which can never be taken at face value.
Jim: Man, it looks like I got to the station right on time. It says the next metro train will be here in 2 minutes.
Tim: You know those are metro minutes, right? Either the train has already pulled into the station and we missed it, or we're gonna be here for a while.
Sarah: Where the hell is Jessica? She said she was changing outfits and will be out in a minute.
Kara: She meant she'll be out in a metro minute. Just sit tight, it could be a while.
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.
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!