爆ばく睡すい

noun, noun or participle which takes 'suru', intransitive verb, noun which may take the genitive case particle 'no'

deep sleep; sleeping like a log; out cold

Colloquial and emphatic; implies sleeping so soundly that nothing wakes you. Often used in casual conversation or social media.

• 昨日きのうは疲つかれすぎて爆ばく睡すいした。

  I was so tired yesterday that I slept like a log.