Mr. Smith wrote:
> I get a lot of these. I have had to learn a new vocabulary
> 
> "mochi !"  - mochiron
> "omoroi !" -  omoshiroi
> "chou omoroi" (etc)
> "shikutta" - I screwed up
> "hoi ja" - see you later
> "be-bai" - bye bye
> "ko-wa" - kowai
> "shi'nai" - shiranai
> "yokukunai?" - "ii ja nai?"
> "kachoi !"  - kakkoi
> 

kimoi, kimochi warui.