ガン寝ね

noun

fast asleep; out cold; dead to the world

Slang term for sleeping very deeply, often to the point of being unresponsive. Similar to 爆睡 (bakusui) but with a slightly more intense or 'knocked out' feel.

See also: 爆睡

• 昨日きのうは疲つかれてガン寝ねしちゃった。

  I was so tired yesterday that I crashed out completely.

• 彼かれはガン寝ねしていて、全ぜん然ぜん起おきない。

  He's out cold and won't wake up at all.