YOU SAID:

the president ate Doritos whilst playing on a Nintendo DS

INTO JAPANESE

大統領はニンテンドーDSで遊びながらドリトスを食べた

BACK INTO ENGLISH

The president ate Doritos while playing Nintendo DS

INTO JAPANESE

大統領はニンテンドーDSをプレイしながらドリトスを食べた

BACK INTO ENGLISH

The president ate Doritos while playing Nintendo DS