Cooties is a 2015 novel.
 Typically, one child administers the "shot", using an index finger to trace circles and dots on another child's forearm while reciting the rhyme, "Circle, circle, Dot, dot,   Now you've got the cootie shot!" In some variations, a child then says, "Circle, circle, Square, square,  Now you have it everywhere!" In this case, the child receives an immunization throughout their body
 The phrase is most commonly used by children in elementary school aged from four to ten; however, it may be used by older children in a sarcastic or playful way

