YOU SAID:

it's a party in my pants, and everyone is coming.

INTO JAPANESE

私のパンツの中でパーティーが開かれ、みんなが来ます。

BACK INTO ENGLISH

There's a party going on in my pants and everyone is coming.

INTO JAPANESE

私のパンツの中でパーティーが開かれていて、みんながやって来ます。

BACK INTO ENGLISH

There's a party going on in my pants and everyone is coming.