If a young man is pulled over for not having a valid registration and the police officer notices a vape pen that used to contain THC wax and he is arr

Young man arrested for having a cartridge with less than half a gram of THC wax. No pen was found in the car. He's arrested and taken to the station where they tried to weigh the device and it wouldn't come up on the scale so they asked him how much it weighed and he told them half a gram.