A Flash Washer is someone in your office that briefly runs their hands (sometimes just fingers) under the water after using the restroom. Basically stating that their restroom activity did not warrant a soap and warm water hand washing.
I'm not eating anything that Donna brings to the pot luck on Thursday, she's a Flash Washer.
A person whom only washes their hands after using the restroom in the visible presence of others. If it "appears" that nobody is present (i.e. somebody is in the stall, or they didn't notice someone was in the room with them), or nobody is actually in the restroom with them, they will leave after using the restroom and not wash their hands.
Christa is a party washer. She only washes her hands in public bathrooms where other people may see her. But not if she thinks she's alone.
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.