If you were ever annoyed by some poorly parked car but didn't know how to express the anger - this is the gift for you. It is your civil duty to order these business cards and let know people that they really suck at parking! And, who knows, maybe some of them actually feel shame and learn how to park properly.
If your dear geek enjoy getting wasted then this is the gift you should get them. Not only they'll use it but think of you every time they get drunk. At least while they're conscious, that is. Suitable for all events where getting wasted is preferable.