To make something so good and so wonderful but then ultimately kill it and make someone feel really bad about it.
Or, a character in John Green's The Fault In Our Stars who had cancer and died young, also made a lot of metaphors about death.

A child, sibling, spouse, house guest or freeloader that always seems to vanish when there are chores that need to be done.

Bald Headed Bastard

To do plenty of drugs, whore yourself around, to do something really stupid or do a combonation of all three.

He's an introvert who loves video games, but he's a fucking badass. Really gullible and doesn't speak to many of his friends, although people call him "smart", though that's a stretch. He makes VERY funny jokes, right? RIGHT?

A penguin is one of the two magical creatures of Earth. They are extremely skilled at martial arts and are reliable agents of espionage. Penguins can traverse quickly through the water and are unaffected by sub-arctic temperatures. Penguins claim to be the original pioneers of space travel.