A walk-out jacket is a jacket branded as such for a simple walk in the park or related activities in which a not-so formal wear may be otherwise required. Commonly sold in third-world countries as luxury goods, for a rampant price.
That Nike "King" Walk-out jacket is too expensive in this market, it is costing 300 monetary units as such. In it's regular market it costs around 34 euros, mostly. Still, it's manufactured in Malasya.
When the entire senior class decides to stage a walk out in the middle of the day. Usually done in the second semester, and sometimes is even the senior prank (but mostly there is the prank, and the walk out).
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.