A 2nd gen (2003-2010) BMW 6 series coupe or convertible.
Person1: Dam bro dat bitch look GOOD!!! what kind of car is that ??
Person2: Oh you know I had to get Da Six!! Triple Black of course!!!
Person3: (driving past in traffic) DAMMMM yo! Look look!!! Yo got Da Six!!
Person4(passenger): OH My GOD!!!! HOW HE GET DAT!!!
Synonymous with "E63", "E64", "645" or "650"