if he asks for licence say u dont have it, if he asks is it stolen say yes, if he asks what did you do with the previous owner, if he asks where did you put him say "in the trunk", he'll call back up another guy will come he'll ask the same do u have ur licens show him ur licence did you steal this car show him the proof its ur did u kill someone say "no check the trunk... I BET YOU HE TOLD YOU I HAVE A SPEEDING TICKET TOO DIDNT HE!!!!!!"
Spend fifteen minutes "looking" for your registration papers among the hundreds of random papers stuffed in your glove compartment, seats, cupholders, and trunk.
Seriously though, it's really not a good idea to try and argue with the officer.