Stemming from a mention in Steven
Furrow's independent film, "Clock Knockers," the term refers to both 6:28pm and
June 28th. 6/28 is the official day for having sex with two women at the same time - a play on "pi" equalling roughly
3.14, which when doubled equals "6.28" (pi being a pun for "pie," which is slang for vagina).
Legend has it that any man has the power to achieve the ultimate goal of 628 on 6/28, with 6:28pm being the perfect time to make the move.