i found this question on the list and felt compelled to answer it.
this is not a question that can be answered quickly or easily, in fact the answer is more layered than the earths core. Ok, not really. Usually it includes, but is not limited to one or more of the following: PBR, an open bar (thanks Oakley), talking on my phone (thanks Apple), trying to show off my skidding skillz, and well....umm....