Toilet etiquette, the household equivalent of guerrilla warfare.
I think they spent all their money on the fancy toilet paper. ~NSHA
Cons: no privacy, no toilet paper, you can't lean back, it might collapse, very very cold.
Pros: the front side of the box looks like a hungry face.
Did I just make a pun about writing utensils and poop, based on a popular idiom? Yes. Yes I did. You're welcome.
It also triples as a health test. If the milk jug starts to melt, please see your doctor.