a one night stand hook-up that you have with someone, that, as the name implies, you have "met" through a Craigslist personals ad.
Two teenage boys are in conversation:
James: I am no longer a virgin
George: lol. What did you do to pop it? Cuz I will kill you if I you popped my ex-girlfriend Christina's cherry. Or did you date-rape some carnival floozie, like Homer Simpson's brother?
James: Um, roflmao, no. I did none of the junk you have enumerated so far. FYI George, i had a craigs-hook.
George: Wow!. So I guess you really were that desperate to lose your virginity that you even abandoned all moral pretexts and turned to Craigslist. Interesting.