YOU SAID:

dude, My head fell of a cucumber, the watermelon is angry

INTO JAPANESE

おい、私の頭はきゅうりで落ちた

BACK INTO ENGLISH

Hey, my head fell with cucumber

INTO JAPANESE

こんにちは、私の頭はきゅうりで落ちました

BACK INTO ENGLISH

Hi, my head fell on cucumber

INTO JAPANESE

こんにちは、私の頭はきゅうりに落ちました

BACK INTO ENGLISH

Hi, my head fell on cucumber