When you fart under the covers then open them up to smell the aroma brewing in your dutch oven.
Open the oven door to smell the poo pie. Even better when your bed partner unknowningly picks up the covers to get under the sack and is hit with a wave of stankness.
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.