Awww, girl scouts. The sweet guilty pleasure of every suburban resident. You open the door, they're right there with a mile-wide smile, and you find yourself unable to say no, due to their devious powers of manipulation. You don't want to buy those cookies, you don't need them, but you feel an urge to, simply because of your need to be a "good customer". And just like that, you regret opening the door in the first place.