Might I suggest using an image of used tampons and spatters of menstrual blood as a standard. Surely no one is disturbed by something so natural and none of the

Might I suggest using an image of used tampons and spatters of menstrual blood as a standard. Surely no one is disturbed by something so natural and none of the boy who like to play with their woodys under the desk while giggling over centrefold pictures will be discouraged from continuing with the class when forced to look at it.