Mascara hangover Share definition Flag When someone falls asleep with their makeup on and their eyes are swollen and/or their face is breaking out the next day Girl 1: Why are your eyes so red, are you stoned? Girl 2: Nah, I just have a mascara hangover. Mascara hangover by Shawster April 19, 2014 0 0 Get merch Get the Mascara hangover mug. Buy Now — $32.95 See more merch