しらかはよふね

Japanese edit

For pronunciation and definitions of しらかはよふね – see the following entry.
白河夜船しらかわよふね
[idiom] being fast asleep, dead to the world when sleeping
[idiom] pretending to know everything, a know-it-all manner
Alternative spellings
白川夜船, 白川夜舟
(This term, しらかはよふね, is a historical kana spelling of the above term.)