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!
You've done this before, haven't you.