My crazy crazy cuisinaire rods stories are far too graphic for this
forum Cyrille. PM me and I'll send you a free trial membership
to the paysite I've sold them all to -
www.nothingbutrod.com.
In Sri Lanka this bloop happened a few times:
An enormous bull cow who lived on the temple grounds would interrupt
class by walking into the classroom and stopping in right front of the blackboard.
I may have a picture somewhere.