'Jami' could possibly be a name, or perhaps you are thinking of 'jama.' Respectively, this could mean "I am Jamie" (or "It's/That's Jamie.") or "[something] is a nuisance."
Desu or Des is the Japanese verb 'to be'
this makes no sense
If you mean DESU , it means the verb "to be" in japonese ~
I am pretty. atashi - I wa...desu - am kirei - pretty
it means is/are it is a conjugate for des or desu.
That was very skillful!
Desu. It is put at the end of a sentence. It can also mean 'it is'.
Literally, "The river is good."
"Shita" is a Japanese word and in English it means "Down"
In colloquial Japanese 'boku' means 'I', so this sentence it would mean, "I don't like you". However for 'boku' to be combined with 'suki ja nai' i.e. I don't like, is odd. It would read, 'Watashi' another personal pronoun for 'I' in Japanese.
The word 'koochii' does not exist in the Japanese language. However, the sentenceこっちですか (kocchi desu ka)could be used to mean "is it this way?" in Japanese.
"Ogenki desu ka?" is a Japanese greeting that translates to "How are you?" It is a way to inquire about someone's well-being.