YOU SAID:

My pants are on backwards

INTO JAPANESE

私のズボンは後ろ向きです

BACK INTO ENGLISH

My pants are facing backwards

INTO JAPANESE

ズボンが後ろ向き

BACK INTO ENGLISH

Pants facing backwards

INTO JAPANESE

後ろ向きパンツ

BACK INTO ENGLISH

Rear facing pants

INTO JAPANESE

後ろ向きパンツ

BACK INTO ENGLISH

Rear facing pants