A male who lives with his girlfriend without paying rent.
Rent and bills are paid by the girlfriend, the cocklodger relies on the fact that the couple are shagging to continue his residency.
Yeah, that guy Jim doesn't pay Rebecca rent to live in her flat, he's a cocklodger.
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.