YOU SAID:

Whats up, this party is pumping! What do ya say?

INTO JAPANESE

さて、このパーティーは盛り上がっています！ yaは何て言ってるの？

BACK INTO ENGLISH

Well, this party is exciting! What is ya saying?

INTO JAPANESE

さて、このパーティーはエキサイティングです！ yaは何を言っているの？

BACK INTO ENGLISH

Well, this party is exciting! What is ya saying?