YOU SAID:

I jizzed on the blankets of my sister's bed

INTO JAPANESE

私は妹のベッドの毛布の上で精液を飲んだ

BACK INTO ENGLISH

I drank semen on my sister's bed blanket

INTO JAPANESE

姉のベッド毛布にザーメンを飲んだ

BACK INTO ENGLISH

I drank semen on my sister's bed blanket