Slushie Slut Share definition Flag Someone who can guzzle down slushies like no one elses business. Especially the Speedway 44 oz ones DUDE! That Ellie Dudding is such a Slushie Slut!Totally. Slushie Slut by Jscal June 4, 2010 0 0 Get merch Get the Slushie Slut mug. Buy Now — $32.95 See more merch