A person below a 7 who you make a connection with early in the night who you know for sure is into you. If you don't end up with anything better at the end of the night you fall back on your insurance policy. Never get caught referring to somebody as an insurance policy.
The 'White Man's Insurance Policy' is a general principal that posits the ability of a white man, after an exhaustive but failed search for love among white women, to gain the courtship of an Asian woman who is usually younger and better looking, with relative ease. The policy has brought joy to the lives of even the most hideous and rejected men among the white population and angst among male Asian populations.