No the title is not a metaphor. This song is about actual hypothermia and is based upon a particular sub zero temperature night in the mountains Fletcher Gull suffered through. It’s a subtly delirious pop song that’s not a million miles from The Flaming Lips with an undercurrent of anxious mania running through it. Infectious, and full of hallucinatory elation, “Hypothermia” makes the act of survival sound positively joyful.