What happens when you get pulled over with somebody else's prescription pills in your car? So, in Tennessee, it is illegal for you to possess somebody else's prescription medication. So, if a police officer is in the process of searching your car and he finds somebody else's prescription medication in your car, you need to make sure that you don't admit to knowledge of those in your car because that would be illegal and you'd be just about to get arrested. So, if a police officer finds medication and he asks you about the medication, what do you say? Come on. You know the answer to this.