Step on a crack , you'll break your mama's back. Step on a stone, you'll end up all alone. Step on a stick, you're bound to get the Sick. Watch where you tread, you'll bring out all the dead. - A common children's playground chant, usually accompanied by jumping rope or clapping.
Lauren Oliver (2014). “Delirium: The Complete Collection: Delirium, Hana, Pandemonium, Annabel, Raven, Requiem”, p.27, Harper Collins