Image via the National Library of New Zealand

The 13 rules of eye flirtation above probably saved society from descending into eye flirtation chaos - I mean, could you imagine what would happen if someone mistook the secret signals? *Shudders*

Thank goodness that the now-defunct Taranaki Herald of New Zealand publshed the complete guides for flirtation, which includes the rules for fan flirtation, glove flirtation, hat flirtation, and parasol flirtation, reproduced here:

via Lists of Note