No joke i know a lot of japanese from just watch anime. I can't make sentences but i understand some words. What a beautiful langague and culture.

Moushi Moushi = Hello

Watashiwa = I

Bokuwa = You

Inki Deska, or Nani = What?

Arigato, Arigato Dezaimas = Thanks.

Janai Desou = Not true.

Shinen = Die!

Urusai = Shut up!

Ksama = Damn you!

Masaka = It can't be!

Kozo = Boy(insult)

Hay = Hi, Ok, EEK.

Wakamarista = Understood

Gambayeru = Keep figthing

Tasketey = Help

Chotto Matte = Please wait

Oni-chan = Brother Neechan = sister. Koshan = Mom. Toshan = Dad

Sugoi,Kawaii = Awesome, Cute.

Naruhodo = Okay then

Skashi = However

Hentai = Anime porno

Keisastsu = Police

Sempai = Master

Tsubasa = Bird

Sakura = A kind of japanese tree with pink flowers. So kawaii