The Scotland/Northern Ireland idiom for gagging without vomiting.
NOTE: The idiom is *the* dry boak. It it never *a* dry boak.
It is from this idiom that the word boak escaped to take on a life of its own (along with the alternate spelling boke) -- with some people using boak (or boke) to mean "the dry boak," and others meaning normal vomiting.
"It would huv gied ye the dry boak tae hear them sookin up tae him, aw sweetie sweetie." (Anne Donovan, Hieroglyphics: And Other Stories, 2001)
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.