I am intrigued by the use of the expression, "milk monitor". Quote here: Were you ever an ink monitor or a milk monitor at school? http://uk.answers.yahoo.com/question/index?qid=20090308071441AASaWGb I take it to refer to a device or plan (e.g.: for a woman feeding her baby), or else to a kid asked to 'monitor' the supply or distribution of milk to other children at school. I am wondering how common the expression is. Insight welcome. Thanks.