A strobe light is something that one should not cary around with them at night when driving an excesive amount of people in their parents car under the influence of marijuana without a valid license.
When your too ghetto for an actual strobe light so you improvise and just blink alot really fast at a steady pace.
Person1: dude I heard your having a strobe light at your party"
Person2: "(laughs) I don't got enough money for that guess you'll just have to deal with a ghetto strobe light"
A Strobe Light Girl is typically a girl that looks amazing when you see her dancing at the club, but once outside or it's the next morning, you realize she looks like ASS.