Pastarrhea Share definition Flag The end result of consuming an inordinate amount of pasta. Awe man. I ate way to much at Olive Garden. I think I am gonna have explosive and violent pastarrhea tonight. Pastarrhea by WordNinjaWarrior January 27, 2015 0 0 Get merch Get the Pastarrhea mug. Buy Now — $32.95 See more merch