The only way to answer a lib like that is to equate it to something they like to do and strip it away. Your Lib friend probably drinks or smokes. Just tell him he can no longer by a six pack and to purchase any alcohol at all he will have to register as an alcohol drinker. Tell him that he will only be entitled to one 12 oz beer/equivilant bottle of wine in a 24 hour time period. Tell him that he is stopped and caught with alcohol that is beyond his legal limit and that he did not legally purchase, it is a felony offense or whatever you want it to be. Auto suspension of driving privledges for 6 months. You have to screw with them on their level.