A Shank Wank is where if you are held at knife point by some road men you’d have one last final wank before you’re sent up into the council estate in the sky.
When you shank someone with your wank or they shank you with your wank. Or the other person grabs a sharp object and shanks you in the wank or you do that with an object to the other person.
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.