Boomrush Share definition Flag The stream of alcoholic saliva that runs down your chin after failing to drink an alcoholic shot in one gulp. Eww, your chin is so sticky. I hope it's just boomrush. Boomrush by Jasmine Hayley Vines September 8, 2013 0 0 Get merch Get the Boomrush mug. Buy Now — $32.95 See more merch