YWSYPL Share definition Flag Short for "You will shit your pants laughing"Used when you are about to tell or show someone something hilarious. I have to show you the picture of Steve from last night, YWSYPL! YWSYPL by alvodude October 12, 2010 0 0 Get merch Get the YWSYPL mug. Buy Now — $32.95 See more merch
