YOU SAID:

I farted on the baby and it giggled!

INTO JAPANESE

私は赤ちゃんをいじったし、笑いました！

BACK INTO ENGLISH

I messed with my baby and laughed!

INTO JAPANESE

私は私の赤ちゃんとめちゃくちゃ笑った！

BACK INTO ENGLISH

I laughed with my baby!

INTO JAPANESE

私は赤ちゃんと笑った！

BACK INTO ENGLISH

I laughed with my baby!