YOU SAID:
The party don't start 'till I walk in!
INTO JAPANESE
パーティーは私が歩くまで始まらない!
BACK INTO ENGLISH
The party will not begin until I walk!
INTO JAPANESE
私が歩くまでパーティーは始まらない!
BACK INTO ENGLISH
The party will not begin until I walk!
That didn't even make that much sense in English.