Mexican Flapjack Share definition Flag When you are at a surprise party and get so excited you poop your pants a little bit I was so excited to surprise Josh at his party that I made a little mexican flapjack in my pants before he even arrived!!! Mexican Flapjack by Muiwovian April 19, 2016 0 0 Get merch Get the Mexican Flapjack mug. Buy Now — $32.95 See more merch