YOU SAID:

I like to slap my knee caps in monkey's faces

INTO JAPANESE

私は猿の顔に私の膝の帽子を平手打ちするのが好き

BACK INTO ENGLISH

I like to slap my knee hat in the face of a monkey

INTO JAPANESE

私は猿の顔に私の膝の帽子を平手打ちするのが好き

BACK INTO ENGLISH

I like to slap my knee hat in the face of a monkey