思おもい出だし笑わらい

noun, noun or participle which takes 'suru', intransitive verb

reminiscent smile; laughing at a memory

The act of smiling or laughing to oneself when recalling a pleasant or amusing past event. Often used as a noun or with する.

• 彼かれはふと思おもい出だし笑わらいをした。

  He suddenly smiled to himself at a memory.

• 電でん車しゃの中なかで思おもい出だし笑わらいしてしまった。

  I ended up laughing to myself on the train as I recalled something.