YOU SAID:

My pizza is having a party in my belly because I ate it

INTO JAPANESE

私はそれを食べたので私のピザは私の腹の中でパーティーを開いています

BACK INTO ENGLISH

Because I ate it, my pizza is holding a party in my belly

INTO JAPANESE

私はそれを食べたので、私のピザは私の腹の中でパーティーを開いています

BACK INTO ENGLISH

As I ate it, my pizza is holding a party in my belly

INTO JAPANESE

私がそれを食べたとき、私のピザは私の腹の中でパーティーを開いています

BACK INTO ENGLISH

When I ate it, my pizza is holding a party in my belly

INTO JAPANESE

私がそれを食べたとき、私のピザは私の腹の中でパーティーを開いています

BACK INTO ENGLISH

When I ate it, my pizza is holding a party in my belly