YOU SAID:

I have a party in my pants that requires booze

INTO JAPANESE

私はズボンで酒を必要とするパーティーをしています

BACK INTO ENGLISH

I have a party that needs alcohol in my pants

INTO JAPANESE

ズボンにアルコールが必要なパーティーがあります

BACK INTO ENGLISH

There is a party that requires alcohol in the pants

INTO JAPANESE

ズボンにアルコールを必要とするパーティーがあります

BACK INTO ENGLISH

There are parties that need alcohol in their pants

INTO JAPANESE

ズボンにアルコールが必要なパーティーがあります

BACK INTO ENGLISH

There is a party that requires alcohol in the pants

INTO JAPANESE

ズボンにアルコールを必要とするパーティーがあります

BACK INTO ENGLISH

There are parties that need alcohol in their pants