YOU SAID:

Shake those boobies up and down let them babies go upside down

INTO JAPANESE

それらのおっぱいを上下に振って、赤ちゃんが上下逆さまになるようにしましょう

BACK INTO ENGLISH

Shake those boobs up and down so that your baby is upside down

INTO JAPANESE

あなたの赤ん坊が上下逆さまになるようにそれらのおっぱいを上下に振る

BACK INTO ENGLISH

Shake those boobs up and down so that your baby is upside down