Cookie.

If you think about it, that innocent children’s Cookie Jar song/chant/game thing is really just teaching children how to blame and frame without conclusive evidence: Teacher asks who stole the cookie (“who stole the cookie from the cookie jar?”), one kid lies and frames some innocent kid (“Jake stole the cookie from the cookie jar”), and that kid (“who me?“) in shock (“couldn’t be!”) frames another innocent kid (“Susan stole the cookie from the cookie jar”) in order to escape being incarcerated for the crime, and the lines repeat for every kid to get a turn blaming and framing while all along, all the kids in the circle are innocent.
I BET THE TEACHER ATE THE COOKIE.