YOU SAID:

son of a groundhog is eating my shorts

INTO JAPANESE

グラウンドホッグの息子が私のパンツを食べている

BACK INTO ENGLISH

Groundhog's son is eating my pants

INTO JAPANESE

グラウンドホッグの息子は私のズボンを食べている

BACK INTO ENGLISH

Groundhog's son is eating my pants