LIFE and DEATH

Here's a game idea I've been intending to make for a while now - you basically have to submit backronyms for the words LIFE or DEATH. For those that can't be bothered to look it up, a backronym is...

"a phrase constructed after the fact to make an existing word or words into an acronym. Backronyms may be invented with serious or humorous intent, or may be a type of false or folk etymology."

So, without further ado, Let's Investigate Further, Eh? (you get the idea yet?).