Festive Shirt Fridays Share definition Flag A day when employees at concrete plants are allowed to wear bright, ugly and "festive" shirts to work. Man, don't forget tomorrow is "Festive Shirt Friday!, Jose ! Festive Shirt Fridays by Romeal June 30, 2004 0 0 Get merch Get the Festive Shirt Fridays mug. Buy Now — $32.95 See more merch