Pert Squirt Share definition Flag (n.) The bloody mess ejected from a woman's vagina during her menstrual cycle, or 'pert'. Dude, Janice 'pert squirted' all over her parents brand new leather sofa! They were so pissed! Pert Squirt by jaynation December 29, 2009 0 0 Get merch Get the Pert Squirt mug. Buy Now — $32.95 See more merch