While girls and women call themselves 私（わたし or わたくし）most of the time (apart from regional variations), men call themselves differently.
- 私（わたし or わたくし）- formal
- 僕（ぼく）- boys use this first and later learn to use other words as they grow up
- 俺（おれ）- young men often use this in casual speech.
- わし – older men sometimes use this in casual speech.