Urban Monkey Warfare occurs when a large number of crazy, possibly diseased, monkeys invade an urban area and proceed to systematically attack the human population. The humans in turn have no choice but to defend themselves, and the army is called in, turning the urban areas into large battlezones. The biggest ever Urban Monkey War was fought in Minto, NSW. The humans ultimately won, but both sides sustained heavy losses.
Urban Monkey Warfare is also the title of a song by KMFDM.
"If you see a large number of crazy monkeys near your house, prepare for Urban Monkey Warfare!"
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.