[Jeff Gordon]

That settles it. Every female should be implanted at birth with a computer chip that specifies (among other things) her date of birth. Not only would this keep innocent Lotharios out of jail but it would prevent said females from partaking in underage drinking.

[sticker]

Would the crystal in their hands be red when they were under 18, yellow 18-20 and green when they are over 21? Something like the idea here