YOU SAID:

got big butts and i cannot lie

INTO JAPANESE

お尻が大きくて嘘はつけない

BACK INTO ENGLISH

Big ass. I'm not lying.

INTO JAPANESE

大きなケツ嘘はついてない

BACK INTO ENGLISH

I'm not lying to you about the big ass.

INTO JAPANESE

大きなケツの事で嘘をついてない

BACK INTO ENGLISH

I'm not lying about the big ass.

INTO JAPANESE

大きなケツのことは嘘じゃない

BACK INTO ENGLISH

I'm not lying about the big ass.