YOU SAID:
tonight i gotta have myself a real good time
INTO JAPANESE
今夜は本当に楽しい時間を過ごさなければなりません
BACK INTO ENGLISH
I have to have a really good time tonight
INTO JAPANESE
今夜は本当に楽しい時間を過ごす必要があります
BACK INTO ENGLISH
I have to have a really good time tonight
That didn't even make that much sense in English.