YOU SAID:
My dog humps my pillows
INTO JAPANESE
私の犬は私の枕をこぶ
BACK INTO ENGLISH
My dog's hump my pillow
INTO JAPANESE
私の犬のこぶ私の枕
BACK INTO ENGLISH
My dog hump my pillow
INTO JAPANESE
私の犬は私の枕をこぶ
BACK INTO ENGLISH
My dog's hump my pillow
INTO JAPANESE
私の犬のこぶ私の枕
BACK INTO ENGLISH
My dog hump my pillow
it is unlikely that this phrase will ever reach equilibrium