YOU SAID:

I have lenny poo in my mouth

INTO JAPANESE

口の中にレニーうんちがあります

BACK INTO ENGLISH

I have a Lenny poop in my mouth

INTO JAPANESE

口の中にレニーのうんちがあります

BACK INTO ENGLISH

I have Lenny's poop in my mouth

INTO JAPANESE

レニーのうんちが口の中にあります

BACK INTO ENGLISH

Lenny's poop is in his mouth

INTO JAPANESE

レニーのうんちは彼の口の中にあります

BACK INTO ENGLISH

Lenny's poop is in his mouth