The rules took a while to sort out. Lena and Carmen wanted to focus on friendship-type rules, stuff about keeping in touch with one another over the summer, and making sure the Pants kept moving from one girl to the next. Tibby preferred to focus on random things you could and couldn't do in the Pants — like picking your nose.

Sisterhood of the Traveling Pants (ed. Delacorte Press, 2002) - ISBN: 9780375890291