toothpaste tongue Share definition Flag the gross taste that all food acquires just after brushing your teeth dude last night I got Starbucks but I had to spit it out, it was a total toothpaste tongue! toothpaste tongue by scbe6811 September 2, 2010 0 0 Get merch Get the toothpaste tongue mug. Buy Now — $32.95 See more merch