I didn't pay attention to his name, you're right. If you mean to say that your username is Mexican, than you write it as メキシカン if you want to write it in Japanese at all. Some people write video game usernames and the like in romaji.
Though, I think you're doing him a disservice by "temporarily lying" to him to ease him into something. Isn't it better to let him know that おう is pronounced as お and then う? I would think that having to remember it as おお just makes it more complicated. I'd rather be told that it's おう, and the う is just a smaller sound.
By the same, the う sound in です is also unvoiced a lot of the time in casual speech, so it sounds like des. The う just has a tough life in general.
October 31, 2014 at 2:34am