2 sets of couples who are in a romantic relationship together. Beyond just swinging or swapping wives or other ethically non-monogamous relationships 'quaple' indicates both partners are interested in relating to both other partners on a mental, emotional and sexual level but together. Quaple indicates a certain committment beyond playing and while non-traditional a quaple feels very much like a mandating a woman only there are two of everything and everyone is comfortable with it. True partners for life expressing their individual desires and nature as one but to another couple.
"Steve, Marie, Lynn and Lee, have been together as a quaple now for almost a year"
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.