What he's saying here without the "big words" is that you got pulled over, your buddy had a roach on him, the car smelt like weed ect...so if they piss test you or take your blood and there's thc present in either and they bring all this evidence to court..the judge is 100% going to rull that you were indeed under the influence and you'll get the dui. I agree with the guy that said yo should have eaten the roach. Also did he perform any eye test or any dui type test like follow his finger ect...? Those are pretty big factors as well. If you failed those and they tested you and u came back positive your capital F..Fucked.