(By Eyleen Tavy) SFist urges:Hasten to the 7-11 store locator page and find the store nearest you. Got it? Now you know where you'll be going to get a free fuckin' Slurpee tomorrow. As Eater SF cleverly points out, there's a curious synergy with the name of the venue and tomorrow's date. But that's not the only auspicious element --they're also celebrating the advent of the Monster Black Ice Slurpee. Which, just, wow. This......